Suppose that cash flows of a project are given as follows Costs, $$ 100,000 20,000 20,000 20,000 20,000 Savings, SS 0.0 60,000 70,000 80,000 90,000 Year It is known that the MARR is 10%. What is the payback period of the project? Possible Answers A. One year B. Two years C. Three years D. Four years E. The project does not pay back