IBM is planning to produce an expert system based on artificial intelligence and expects the following cash flows (in $ million) at the end of each year: Year Cash flow 0 -50 1 10 2 15 3 20 4 30 The company requires a return of 9% from this project. The NPV and Profitability index for this project is: a. 2.5.1.11 b.4.5, 1.02 c. 6.5, 1.23 d. 8.5, 1.17 e. 10.5, 1.32 f. Other, specify