Using the table of option premiums below, what is the maximum loss of the following portfolio strategy: sell 2 calls with a strike price of $40, and buy 1 put with a strike price of $70, and buy 1 call with a strike price of $50, and buy 2 calls with a strike price of $60? (All calls and put are written on the same stock with the same expiration date) Option type Call Put Call Call Strike price $40 $70 $50 $60 Premium $20 $15 $10