问题如下：
Megan Easton is a portfolio manager with Dynamo Investment Partners (Dynamo) and manages a bond portfolio that invests primarily in investment-grade corporate bonds with a limited amount of US government bonds. Easton meets with John Avelyn, a newly hired analyst, to discuss the structure and management of this investment portfolio, as well as some possible changes to the portfolio composition.
Easton begins the meeting by stating her belief that the credit spread is the single most important measure that investors use when selecting bonds. Among the various credit spread measures, including the G-spread, I-spread, and Z-spread, Easton prefers the G-spread.
A benefit of Easton’s preferred credit spread measure is that it:
选项：
A.provides a good measure of credit spread for bonds with optionality.
uses swap rates denominated in the same currency as the credit security
reduces the potential for maturity mismatch.
解释：
C is correct.
The G-spread is the spread over an actual or interpolated benchmark (usually government) bond. A benefit of the G-spread is that when the maturity of the credit security differs from that of the benchmark bond, the yields of two government bonds can be weighted so that their weighted average maturity matches the credit security’s maturity.
老师您好，
请问
1.“her belief that the credit spread is the single most important measure that investors use when selecting bonds.”这句话对么？
2.另外麻烦解释一下第二个选项，谢谢！
