Which of the following is false?

Group of answer choices

a) Being long a put option is somewhat analogous to being in a short stock position.

b) An option is more valuable than a forward as forwards involves no up-front payment while option involves up-front payment.

c) A short call option position in naked options you would adopt if you believe that the price of the stock is going to drop and the volatility of the stock is going to decrease.

d) An investor has a very deep-in-the-money call option on this stock and he believes that it cannot go any higher. Assuming the stock pays no dividends, then, the investor should exercise the call.