单选题

Duration is most accurate as a measure of interest rate risk for a bond portfolio when the slope of the yield curve:

A、 stays the same.
B、 increases.
C、 decreases.

【正确答案】 A

【答案解析】

Duration measures the change in the price of a portfolio of bonds if the yields for all maturities change by the same amount; that is, it assumes the slope of the yield curve stays the same.