c. Build a data table in which you show the sensitivity of the equity value to the level of SG & A. Let SG & A vary from $0 per year to $600 per year. (5 points) d. Back to Part A. Suppose that the fixed assets at cost follow the following step function: 100% * Sales if Sales $ 1,200 Fixed Assets at Cost = 1,200+90% * (Sales -1,200) 1,200 1,400 Incorporate this function into the model and solve for the market value of equity. (5 points)