Your division is considering 2 investment projects, each which requires an upfront expenditure of $27 million. You estimate the cost of capital is 10% and that the investments will produce the following after-tax cash flows (in millions of dollars). Year Project A Project B 0 -$27 -$27 1 $5 $20 2 $10 $10 3 $15 $8 4 $22 a) What is the regular payback period for each of these projects? (6 marks) b) What is the discounted payback period for each of these projects? (6 marks) $8