单选题 When determining credit risk spread, the benchmark security is most likely a(n):

A、

A. Low-yield corporate bond.
B、

B. Treasury bond.
C、

C. AA rated bond.

【正确答案】 B

【答案解析】The credit risk spread is measured in relation to a default-free security. Of the choices above, the security with the least chance of default is the Treasury bond. The AA rated bond is high quality, but not the highest quality (which would have an AAA rating). The low-yield corporate bond is a possibility, but it is not likely that this bond is as default-free as the Treasury security.