a. Use the Black-Scholes formula to find the value of the following call option. Note: Do not round intermediate calculations. Round your final answer to 2 decimal places. 1. Time to expiration 1 year. 2. Standard deviation 40% per year. 3. Exercise price $86. 4. Stock price $86. 5. Interest rate 4% (effective annual yield). b. Now recalculate the value of this call option, but use the following parameter values. Each change should be considered independently. Note: Do not round intermediate calculations. Round your final answers to 2 decimal places. 1. Time to expiration 2 years. 2. Standard deviation 50% per year. 3. Exercise price $96. 4. Stock price $96. 5. Interest rate 6%. c. In which case did increasing the value of the input not increase your calculation of option value? a. Call option value b-1. Call option value when time to expiration is 2 years. b-2. Call option value when standard deviation is 50% per year. b-3. Call option value when exercise price is $60. b-4. Call option value when stock price is $60. b-5. Call option value when interest rate is 6%. c. Fall in option value