单选题 The modified duration of a bond is 6.45. The percentage change in price using duration for a yield decrease of 50 basis points is closest to:
【正确答案】 C
【答案解析】[解析] 债券价格变动的百分比=-修正久期×收益率变动百分比 =-6.45×(-0.5%) =3.225%