( 1 point) Consider an n=1 step binomial tree with T=1. Suppose r, the annualized risk-free rate is 11%, and delta, the annualized dividend rate is 10%. Also suppose the annualized standard deviation of the continuously compounded stock return, sigma, is 25%. Suppose further that the initial stock price, S=$100. Compute American call option prices for K=$50,$60,$70,$80,$90,$100,$110. a) Determine the American call premium, when K=$50 ? b) Determine the American call premium, when K=$60