Question 18 Incorrect 0.00 points out of 1.00 What is the correct formula when calculating the net present value of an investment? a. After tax cash revenues , after tax cash expenses + depreciation tax savings x PV factor = net present value of cash flow b. After tax cash revenues , after tax cash expenses , depreciation tax savings x PV factor = net present value of cash flowx c. After tax cash revenues + after tax cash expenses , depreciation tax savings x PV factor = net present value of cash flow d. After tax cash revenues + after tax cash expenses + depreciation tax savings x PV factor = net present value of cash flow Your answer is incorrect