Calculate the net present value of project S considering the following estimated data: Initial cost at time 0=$1,000 After-tax, end of year cash inflows are as follows: first year: $500; second year: $400; third year: $300; fourth year: $100. The risk-adjusted cost of capital (or WACC) is 10%. Select one: a. $78.82 b. $1,300 c. $100.40 d. $300.00