An investor holds a long position in two call options that are worth currently $8 and $3 at respective strike prices are $55 and $65. He also holds a short position on two call options worth $5 at a strike price of $60. These four options are attached to the same security (underlying) and have the same date expiration.

a) Draw a graph showing the investor's strategy.

b) What do you call the strategy followed by the investor.

c) Construct a table showing the payoff profile of this strategy.

d) For what price levels (or price ranges) of action this strategy would lead to positive net gains?