How would you create the following payoff by buying/selling calls?

Could you do it using only puts as well?

Do you expect the net upfront cost of implementing this strategy to be positive or negative?

(Explain the type, the number, and the strike price of the options you buy/sell. Note that the graph shows only the final payoff. No initial cost is included.)

7 6 5 t payoff 3 1 0 8 9 7 8 stock price 10 11 12 13 14 15 11 12 7 6 5 t payoff 3 1 0 8 9 7 8 stock price 10 11 12 13 14 15 11 12