Let S = $40, K = $40, r = 8% (continuously compounded), = 30%, =

Question:

Let S = $40, K = $40, r = 8% (continuously compounded), σ = 30%, δ = 0, T = 0.5 year, and n = 2.
a. Construct the binomial tree for the stock. What are u and d?
b. Show that the call price is $4.110.
c. Compute the prices of American and European puts.