An exchange call option with expiration of one year allows the owner to acquire one share of a stock A for one share of a stock B. The price of the option is $2.16. Stock A pays dividends at the continuously compounded yield of 7%. Stock B pays no dividends. Stock A currently trades for $50 and stock B trades for $55. Find the value of an exchange option that allows the owner to give up one share of stock A for one share of stock B

answer is NOT 4.72