= (20 points) A. You wish to sell 50 one-year calls on a stock with the following parameters: S(0) 20, = 0.5, = 0.07, r = 0.02, = 0.01, K = 23. You will use the method of A-hedging to reduce your risk, with rehedging occuring every six months. What is your total profit, assuming that any money added or removed from the portfolio is invested at the risk-free rate? The stock price over the course of the year takes on the following values: S(0) = 20, S(1/2) =25, S(1) =23. It is intended that you use the Call and Put Values Excel Workbook for this problem; you must show how you change the inputs and use the outputs on this workbook in order to receive credit for this problem.