We use notation Ck and Pk to represent call and put options for a given stock with a strike price K respectively. Let be the price of the stock at the maturity of the options. Draw the graphs of the payo? as a function of S for the following portfolios involving options at their maturity.
Hold one share of stock and short one call optionC100
Hold one call option C100 and one put optionP100 .
Hold one put option P100 and two call option C120; short one put option P80 and one call optionC150 .