11. You have the following information: Stock is now 60 and stock will go up in value by 12% or down in value by 8% in a given year. The continuously compounded risk-free rate of interest is 5% per annum and the price of the There exist options with an exercise price of 70 and maturity of two years. There are no dividends. Assuming two years until expiration, determine the value of an American call on the stock.