问题如下图：
选项：
A. 
B. 
C. 
解释：
请问这题C选项错在哪？
NO.PZ201604030100004201 问题如下 Erik Brecksen, CFa portfolio manager Apfelbaum Kapital, is a strong aocate of the CFA program. He splays the CFA logo on both his letterheanbusiness car anprefers to hire only CFA cantes or charterholrs. Brecksen recently recruiteHans Grohl, a CFA cante anrecent Mgraate from a top university with excellent quantitative analysis skills. After receiving Grohl’s letter of acceptance, Brecksen instructs the personnel partment to orr business car anletterhefor Grohl, telling them, \"Use mine a template. Just change the name, title, another information necessary.\" When Grohl arrives for his first y of work, he receives business car anletterhesplaying his name, the firm name, anthe CFA logo. Apfelbaum Kapitstresses \"top-wn\" funmentanalysis anuses a teapproato investment management. The firm’s investment professionals, all of whom are CFA charterholrs or cantes, attenweekly investment committee meetings. the meetings, analysts responsible for fferent instrisectors present their researanrecommentions. Following eapresentation, the investment committee, consisting of senior portfolio managers, questions the analyst about the recommention. If the majority of the committee agrees with the recommention, the recommention is approveanthe stois placeon a restrictelist while the firm executes the necessary tras. Apfelbaum consirs its researproprietary. It is intenfor the sole use of its investment professionals anis not stributeoutsi the firm. The names of all the investment personnel associatewith the sector or investment class are listeon earesearreport regaress of their actulevel of contribution to the report. On Grohl’s first y of work, Brecksen assigns him responsibility for a company thBrecksen coverepreviously. He provis Grohl with his past researinclung all of his files anreports. Brecksen instructs Grohl to report bawhen he hfinishehis researanis rea to submit his own researreport on the company. Grohl rea Brecksen’s olreports before stuing the financistatements of the company anits competitors. Taking aantage of his quantitative analysis skills, Grohl then concts a tailemulti-factor analysis. Afterwar he proces a written buy recommention using Brecksen’s olresearreports a gui for formansubmits a aft to Brecksen for review. Brecksen reviews the work anincates thhe is not familiwith multi-factor analysis. He tells Grohl thhe agrees with the buy recommention, but instructs Grohl to omit the multi-factor analysis from the report. Grohl attempts to fenhis researmethology, but is interruptewhen Brecksen accepts a phone call. Grohl follows Brecksen’s instructions anremoves all mention of the multi-factor analysis from the finreport. Brecksen presents the completereport the weekly meeting with both his anGrohl’s names listeon the cument. After Brecksen’s initipresentation, the committee turns to Grohl anasks about his research. Grohl takes the opportunity to mention the multi-factor analysis. Satisfie the committee votes in favor of the recommention ancongratulates Grohl on his work. Ottie Zar, CFhworkea reestate analyst for Apfelbaum for the past 18 months. A new inpennt rating servihterminethZar’s recommentions have resultein excess return of 12% versus the instry’s return of 2.7% for the past twelve months. After learning about the rating service, Zar immeately uptes the promotionmaterihe is preparing for stribution upcoming instry conference. He inclus a referento the rating servianquotes its returns results another information. Before stributing the materithe conference, he as a footnote stating \"Past performanis no guarantee of future success.\" 1. Accorng to the CFA Institute Stanr of ProfessionConct, mBrecksen anGrohl both use the letterheanbusiness car proviApfelbaum Kapital? A.Yes. B.No, because cantes mnot use the logo. C.No, because the logo mnot useon company letterhea B is correct.The CFA logo is a certification mark intento intify invicharterholrs anmnot incorporateinto a company’s name or logo. StanrVII(incates ththe use of the CFA logo is appropriate on the business caror letterheof inviCFA charterholr. 老师好，既然说cante可以用logo在自己的letterhea为什么B是对的呢？
这题第一问不是很理解，不选C，是因为CFA可以用于公司的letterhe吗？求教！
这道题为什么不选C呢？我认为C也是正确的
