题目：
The risk-free rate is 5 percent, the market rate is 12 percent, and the beta of a stock is 0.5, what would happen to the required rate of return if the inflation premium increased by 2 percent It would:（）
A. increase to 15.
B. decrease to 8.5.
C. increase to 10.5.
答案：
参考答案：C
解析：
k0=5+0.5×(12-5)=8.5; k1=7+0.5×(14-7)=10.5.
