You own a call option on Intuit stock with strike price of $35. The option will expire in exactly three months' time.

a. If the stock is trading at $49 in three months, what will be the payoff of the call?

b. If the stock is trading at $28 in three months, what is the value of the call?

c. Draw a payoff diagram showing the value of the call at expiration as a function of the stock price at expiration.