看不懂答案

问题如下：

In fixed income portfolio mapping, when the risk factors have been selected, which of the following mapping approaches requires that one risk factor be chosen that corresponds to average portfolio maturity?

选项：

A.

Principal mapping

B.

Duration mapping

C.

Convexity mapping

D.

Cash mapping

解释：

A is correct.

考点$：$Mapping to Fixed Income Portfolios

解析$：$With principal mapping, one risk factor is chosen that corresponds to the average portfolio maturity. With duration mapping, one risk factor is chosen that corresponds to the portfolio duration. With  cashflow mapping, the portfolio cashflows are grouped into maturity buckets. Convexity mapping is not a method of VaR mapping for fixedincome portfolios.