If I buy a European put option with a strike price of $10, buy a European call option with a strike price of $5, and write (sell) a European call option with a strike price of $15 on the same underlying stock, where all option contracts have the same maturity, then at maturity the value/payoff of my portfolio of these three option contracts will be worth (choose one and explain). (Hint: it might be useful to make a payoff table/diagram.)

(a) more than $10. (b) between $5 and $10. (c) between $0 and $5. (d) $0. (e) cannot be determined given the available information.