[CFA入门] 请教两个fixed income 的题目 note 5 page 41 except, before, income, respect, security

wangzilin

1.  a floating-rate security will have the greatest duration

A the day before the reset date

B the day after the reset date

C never-floating-rate securities have a duration of zero

 

答案是B 可是我怎么想怎么觉得是A 啊

 

2. A straight 5% bond has two years remaining to maturity and is priced at $981.67. A callable bond that is the same in every respect as the straight bond, except for the call feature, is priced at $917.60. With the yield curve flat at 6%, what is the value of the embedded call option?

A. 45.8

B 64.07

C 101.00

 

答案是 981.67-917.60=64.07

 

但是这两个bond 的rate都不同 option为什么可以这样减呢？