An investor expects the yield curve will become volatile over the next 3-month. He is
considering building a strategy for this expectation. Which of the folowing strategy is most
appropriate?
A. Long callable bond
B.Long putable bond
C.Sell put options on bond
这个题里面只说波动率会增加，那如果是价格上涨的多的话，long 了 callable bond 不就是可以按执行价格低价买入吗？ 还是没太明白A和B里面为什么选B