John expects Xie Inc. stock to increase from its current price of $90 per share. He purchases a call option on Xie stock with an exercise price of $92 for a premium of $4 per share. Xie stock rises to $97 prior to the option's expiration date. If John exercises the option and immediately sells the shares in the market, what is his net gain from the transaction? A) $4 B) $2 C) $1 D) $2