问题
单项选择题
Which of the following statements regarding an option prior to expiration is TRUE The maximum value of:()
A. a European put is less than the maximum value of an American put.
B. an American call is less than the maximum value of a European call.
C. a European put is equal to the maximum value of an American put.
答案
参考答案：A
解析：
The maximum value of a European put is X/( 1 + r)T and the maximum value of an American put is X.