the Q should be answered by building a 15-period binomial model whose parameters should be calibrated to a Black-Scholes geometric Brownian motion model with: T=.25 years, K=110 S0=100, r=2%, =30% and a dividend yield of c=1%, 1.Compute the price of an American put option

2. when is the earliest period at which it might be optimal to early exercise the put option?

3.Compute the fair value of an American call option with strike K=110 and maturity n=10 periods where the option is written on a futures contract that expires after 15 periods. The futures contract is on the same underlying security of the previous, What is the earliest time period in which you might want to exercise the American futures option ?