问题
单项选择题
If a stock is selling for $25, the exercise price of a put option on that stock is $20, and the time to expiration of the option is 90 days, the minimum and maximum prices for the put today are :
A．
| A. $5 and $25. |
B．
| B. $0 and $20. |
C．
| C. $5 and $20. |
答案
参考答案：B
解析：You know that the minimum value is zero, so this narrows the answer down to two choices. You also know that the maximum put value is the exercise price for American puts, and the discounted value of the exercise price for European puts, which will be less than the exercise price.