单选题 Which of the following measures of interest rate risk is most appropriate for bonds with prepayment option?
A. Effective duration.
B. Modified duration.
C. Macaulay duration.

【正确答案】 A
【答案解析】[解析] 对于有内含权或者提前偿付权的债券而言，由于现金流是不确定的，故应该用有效久期测量利率风险，而不能用修正久期或麦考利久期。