A non-dividend paying stock, currently priced at 140, is expected to go up by 10% or go down by 10% over a period. The risk free rate for one period is 4%. Price a call option with X=120 using the formula with factorials for 3 periods. No need to build a tree. In your answer report the 3rd period call values, the cumulative probability of each final node, and the number of paths you can get to each outcome