The price of Cilantro, Incorporated, stock will be either $$79$ or $$101$ at the end of the year. Call options are available with one year to expiration. T$-$bills currently yield $4$ percent.

a$.$

Suppose the current price of the company's stock is $$90.$ What is the value of the call option if the exercise price is $$75$ per share? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ Suppose the current price of the company's stock is $$90.$ What is the value of the call option if the exercise price is $$85$ per share? $($Do not round intermediate calculations and round your answer to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$