An investor gathered the following information on two U. S. corporate bonds: Bond J is callable with maturity of 5 years Bond J has a par value of $10000 Bond M is option-free with a maturity of 5 years Bond M has a par value of $1000 For each bond, which duration calculation should be appliedBond J Bond M（）
A. Effective Duration Effective Duration only
B. Modified Duration Modified Duration or Effective Duration
C. Effective Duration Modified Duration or Effective Duration
参考答案：C
解析：
The duration computation remains the same. The only difference between modified and effective duration is that effective duration is used for bonds with embedded options. Modified duration assumes that all the cash flows on the bond will not change, while effective duration considers expected cash flow changes that may occur with embedded options.