NO.PZ2023052301000022
问题如下：
With a constant market discount rate, as a non-callable, fixed-coupon bond approaches maturity:
选项：
A. the price–yield relationship will become more convex.
a low-coupon bond trading at a discount will increase in price.
a high-coupon bond trading at a premium will increase in price.
解释：
B is correct. Any bond trading at a discount will increase in price because of the pull-to-par effect.
A is incorrect because the price–yield relationship generally becomes less convex as a bond approaches maturity.
C is incorrect because a high-coupon bond trading at a premium will decrease in price as it approaches maturity.
可以详细说下A不
