21. Consider a one-year maturity call option and a one-year put option on the same stock, both with an exercise price of $45. If the risk-free rate is 4%, the stock price is $48, and the put sells for $1.50, what should be the price of the call? (a) (b) (c) (d) $4.38 $5.60 $6.23 $12.26