问题如下：
Which of the following not a cause of the misalignment between investors,and rating agencies' incentives prior to the credit crisis of 2007-2009?
选项：
A.Profit motive of the rating agencies.
B.Pressure from the originators of securitized products.
C.Manipulation of the ratings process by the originators.
D.Investors' lack of understanding of the products they were purchasing.
解释：
D According to the findings of the congressionally formed Financial Crisis Inquiry Commission, the root causes of the misalignment were the flawed computer models at the rating agencies, the profit motive of the rating agencies, pressure from the originators, the drive for market share coming from the rating agencies, the rating agencies lack of provided (not available) resources to conduct the proper due diligence, and the absence of meaningful public oversight. A thorough post-audit of the crisis will also reveal that originators also manufactured the securitized products to specifically arrive at a rating given their acquired knowledge of the rating agencies’ decision flow charts.
请问老师这道题为什么不能选B？能解释一下选项吗，谢谢！
