问题如下：
Which of the following theories is associated with maximizing shareholder returns?
选项：
A.Stakeholder theory.
B.Shareholder theory.
C.Factor theory.
解释：
B is correct.
Shareholder theory takes the view that the most important responsibility of a company’s managers is to maximize shareholder returns. Stakeholder theory broadens a company’s focus beyond the interests of only its shareholders to its customers, suppliers, employees and others who have an interest in the company.
C
Factor theory.
这个是啥？凑选项的么？我找了 notes 和原版书里都没有
