为啥不是C阿

问题如下：

The spread that must be added to each rate on the benchmark yield curve (spot curve) to make the present value of a bond equal to its price is most likely:

选项：

A.

Z-spread.

B.

I-spread.

C.

G-spread.

解释：

A is correct.

Interpolated spread's(I-spread) benchmark is swap rate.

G-spread's benchmark is government bond yield.

Z-spread must be added to each rate on the benchmark curve(spot curve) to make the present value of a bond equal to its price.

考点：spread

解析：为了使债券现金流的折现值等于其价格，我们在spot curve上加的spread是Z-spread，题干描述的就是z-spread的定义。