Consider Options That Are Identical in All Respects Except for the Differences

Consider options that are identical in all respects except for the differences that are mentioned.Then which of the following statements is INCORRECT?

A) The difference in American call prices cannot exceed the difference in exercise prices.
B) The price difference between two European puts cannot exceed the difference in exercise prices.
C) The longer the time until expiration,the less valuable an American put is.
D) Before expiration,an American put must be worth at least the exercise price less the stock price.
E) Before expiration,a call option must be worth at least the stock price less the present value of the strike price.