问题
单项选择题
An analyst does research about relationship between duration and actual price. An option-free bond having the duration of 8, if yields decrease by 100 basis point, the actual price of the bond will:（）
A. increase by more than 8%.
B. increase by less than 8%.
C. decrease by more than 8%.
答案
参考答案：A
解析：
相比较于仅仅采用久期所计算的价格变化，债券的真实价格变化是“当利率下降时涨得快，当利率上升时跌得慢”。