问题
单项选择题
Compared to European put options on an asset with no cash flows, an American put option: （）
A. will have a higher, lower bound on its price.
B. will have a lower, lower bound on its price.
C. will have the same lower bound on its price.
答案
参考答案：A
解析：
Early exercise of an in-the-money American put option on an asset with no cash flows can generate more, X-S, than the minimum value of the European option, X/(1+R)T-S. The possibility of profitable early exercise leads to a higher, lower bound on the price of the American put option.