The price of Tara, Inc., stock will be either $68 or $90 at the end of the year. Call options are available with one year to expiration. T-bills currently yield 6 percent.

a. Suppose the current price of the company's stock is $79. What is the value of the call option if the exercise price is $64 per share? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Call value $

b. Suppose the current price of the company's stock is $79. What is the value of the call option if the exercise price is $74 per share? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Call value