问题如下：
When determining the standard deviation of value due to credit quality changes for a single exposure, the CreditMetrics model uses three primary factors. Which of the following is not one of the factors used in this model?
选项：
A. Credit
ratings
B. Seniority
C. Equity
prices
D. Credit
spreads
解释：
ANSWER: C
CreditMetrics uses credit ratings, the transition matrix, recovery rates, and LGD for various seniorities, but not equity prices for the obligor.
这幅图里面明明写了credit metrics from equities啊
