Sandra Gilbert, Retiree 1. Calculate the aftertax proceeds from option 1 . 2. Assuming a discount rate of 8 percent, calculate the net present value of the aftertax benefits of the 2m option. 3. Once again assuming a discount rate of 8 percent, calculate the net present value of the aftertax benefits of the 3nd option. 4. What is the net present value of the fourth option based on the specified tax rates and an 8 percent discount rate? 5. Which of the four options provides the highest net present value? 6. In comparing option 2 and 3 , if a discount rate of four percent instead of eight percent were used, would your answer change? Explain the reasoning behind your conclusion