d) European call with a strike price of $40 costs $7. European put with the same strike price and expiration date costs $6. Assume that you buy one call and one put (straddle strategy). Sketch the graph and write down functions of payoff and profit. e) European call with a strike price of $40 costs $7. European put with the strike price of $30 and expiration date costs $5. Assume that you buy one call and one put (strangle strategy). Sketch the graph and write down functions of payoff and profit. f) European call with a strike price of $40 costs $7. European put with the same strike price and expiration date costs $6. Assume that you buy these one call and two puts (strip strategy). Sketch the graph and write down functions of payoff and profit