Problem 21-36 You are attempting to value a call option with an exercise price of $107 and one year to expiration. The underlying stock pays no dividends, its current price is $107, and you believe it has a 50% chance of increasing to $123 and a 50% chance of decreasing to $91. The risk-free rate of interest is 12%. Calculate the call option's value using the two-state stock price model. (Do not round intermediate calculations. Round your final answer to 2 decimal places.) Call option's value $ 12.88