Which of the following is NOT true?
A. An American option can be exercised at any time during its life.
B. A put option will always be exercised at maturity if the strike price is greater than the underlying asset price.
C. When a CBOE call option on APPLE is exercised, APPLE issues more stock.
D. An call option will always be exercised at maturity if the underlying asset price is greater than the strike price.