Denote ST as the stock price at the expiration date. Profits are in $ amounts. Profit 20 10 0 S 20 30 50 60 90 T -10 The figure above shows the profits of an investor, who A. goes short on a call option that has a strike price of $50 B. goes long on a put option that has a strike price of $50 OC. goes short on a call option that has a strike price of $60 O D.goes long a put option that has a strike price of $60