问题如下：
In order to meet all the requirements of the Basel Committee's guidelines when Avacado City Bank utilizes the advanced measurement approach (AMA), the risk managers have chosen a very large number of operational risk categories (ORCs) for risk management. Which of the following issues are most likely to be caused by choosing too many operational risk categories?
选项：
A.There will be too much data below the risk threshold to make the available data too small.
B.When modeling operational risks, the complexity and correlations of bank operations cannot be captured.
C.In each category, the loss data are all too high.
D.It will require a very high amount of reporting.
解释：
A is correct.
考点：level of granularity
解析：对风险的分类太多和太少都不好，尤其是用LDA方法的时候。分类太少的话业务条线的风险的区别就会不清晰。分类太多的话，每种分类下的的风险会比较少以至于低于公司的数据阈值，风险情况报告会很少。所以要根据公司业务条线的重要性合理分配风险类别。
麻烦问下：分类比较多，每种风险下的风险虽然比较少，但是总风险是不变的，这样也不是问题吧。
