问题
单项选择题
Buying an interest-rate cap and selling an interest-rate floor is equivalent to:()
A. buying a series of interest-rate calls and selling a series of interest-rate puts.
B. buying a series of interest-rate puts and selling a series of interest rate calls.
C. buying a series of interest-rate puts and calls.
答案
参考答案：A
解析：
A cap is equivalent to a series of (long interest-rate calls and selling a floor is equivalent to selling a series of interest-rate puts.