Consider a two-period, two-state economy. ABL stock is currently worth $22.50 and the risk-free rate is 2.5% per period. In each of the two periods, ABL stock price can go either up by 20 percent or down by 10 percent. A call option on ABL stock expiring at the end of the second period has an exercise price of $25. a. Determine the possible prices of the call option at expiration. b. Determine the possible prices of the call option at the end of the first period. c. What is the current price of the call option? Put option? d. Demonstrate how the hedge works well for period 1. e. Given that the call is currently priced in the market at $4.25. What would you do?