Describe the payoff for the following options at expiration of the option(s): an owned call option on 50 units of the underlying asset with a strike price of 50. an owned put option on 100 units of the underlying asset with a strike price of 40. a written call option on 100 units of the underlying asset with a strike price of 60. a written put option on 50 units of the underlying asset with a strike price of 50. a portfolio of options consisting of each of a through d above. (you may describe the payoff verbally or with a diagram)