Compute the value of an American call and put option with both binomial and trinomial tree. Consider the following values: S0 = 100, r = 0 and = 25%. Plot the convergence of the tree when K < 90, K = 100 and K = 110. For the trinomial tree compare the convergence for different values of . In particular, compare the convergence of the trinomial tree for = 1 and the one of the binomial tree. (Please use Python for the coding)