请问为什么不选C 问题如下图：
选项：
A. 
B. 
C. 
D. 
解释：
There are a number of challenges for clearing over-the-counter (OTrivative procts through a centralizecounterparty (CCP). Whiof the following statements best summarizes the key challenges for centrclearing of OTC rivative procts? Jurisctionfragmentation, increasecounterparty risk, less transparency, anstanrzation. Procomplexity, illiquiprocts, presenofwrong-wrisk, anlaof stanrzation. Illiquiprocts, jurisctionfragmentation, presenof wrong-wrisk, anlegconcerns. Laof stanrzation, increasecounterparty risk, increasepennrisk, anless transparency. B Laof stanrzeprocts, complexity, illiquiprocts, anpresenof wrong-wrisk are characteristiof OTC rivative procts thmake Cclearing challenging. OTC rivative procts neeto stanrzebefore they cclearethrough a CCP. More complex anilliquirivative procts are problematic for CCPs because their unique features make them fficult to value. Procts with wrong-wrisk are also more complex ancreate aitionconcerns for the aerisk to CCPs in the event of fault. CCP的存在不是会提高标准化，从而提高市场的流动性吗？那为什么stanrzation会是 challenge呢？
老师好，不是也对？
