Assume that a stock's price over the next two periods is as shown below.

The initial value of the stock is $80. The probability of an up move in any given period is 75% and the probability of a down move in any given period is 25%. Using the binomial model, the probability that the stock's price will be $79.20 at the end of two periods is closest to:

A.18.75%.

B.37.50%.

C.56.25%.