Consider a 2 x 0.24-year call option with a strike price of $115 on a non-dividend-paying stock when the spot price is $115 and the risk free rate of interest is 19%. Over each of the next two 0.24-year periods, the spot price of the asset is expected to go up by 10% or down by 10%. a) Calculate the price of the call if it is a European option. b) Calculate the price of the call if it is an American option.