根据下面的情境，补写流水与树根的对话。

　    一天，流水遇到了树根。　

       流水讽刺树根说：_______________________________________________________　　

       树根谦和地回答：_______________________________________________________　　

       到了春天，流水穿过山涧，走过草地，惊讶地看到树根滋养出的鲜花装点了大地。

Which of the following investors is least susceptible to inflation risk（）

A. A financial institution with assets concentrated in fixed-rate mortgages.

B. An individual with a 5 year certificate of deposit at a local financial institution.

C. The holder of a 15-year bond with a coupon formula equal to the U. S. prime rate plus 3.25%.