题目
Which of the following is most true about American options?
选项
A.Early exercise is never optimal.
B.Early exercise of an American call on a non-dividend paying stock is never optimal.
C.Early exercise of an American put on a non-dividend paying stock is never optimal.
D.Prior to exercise, the value of the American call is always equal to the European call.
答案
B
解析
An American call option on a non-dividend-paying stock should never be exercised early while an American put option on a non-dividend-paying stock may be exercised early.非派息股票的美式看涨期权不会提前行使，而非派息股票的美式看跌期权则存在提前行权的可能行的。