怎么理解最后一句话

问题如下：

Shield considers Derran’s financial situation and her stated objectives. He suggests repositioning the portfolio by selling equities and purchasing bonds such that the aggregate effect on the portfolio will be to produce regular cash flows, reduce volatility, and create a direct link between the amount of the reallocated principal and an index of consumer prices.

In repositioning the portfolio, Shield should most likely add: (2019 mock AM)

选项：

A.inflation-linked bonds. B.

fixed-coupon bonds.

C.

floating-coupon bonds.

解释：

Adding inflation-linked bonds to the portfolio incorporates each of the elements of producing regular cash flows, reducing volatility, and maintaining a direct link to an index of consumer prices. Inflation-linked bonds provide investors with valuable inflation-hedging benefits by paying a return that is directly linked to an index of consumer prices and adjusting the principal for inflation. There are several different structures for inflation-linked bonds, such as zero-coupon bonds with the inflation adjustment made to the principal payment and capital-indexed bonds, where a fixed coupon rate is applied to a principal amount that is adjusted for inflation throughout the bond’s life.