Assume only two states will exist one year from today when a call on Delta Transportation, Inc. stock expires. The price of Delta stock will be either $$60$ or $$40$ on that date. Today, Delta stock trades for $$55.$ The strike price of the call is $$50.$ The continuously compounded risk$-$free rate is $9\%.$

a$.$ What is the tracking portfolio $(\backslash$Delta and b$)?$

b$.$ How much are you willing to pay for the call option?