7-A company has the following three independent Investment projects available this year. The firm's cost of capital is 12%. Project A B C Initial cost-$35,000 - $45,000-$45,000 Year 1 CF $10,000 $15,000 $12,000 Year 2 CF $11,000 $14,000 $13,000 Year 3 CF $12,000 $13,000 $14,000 Year 4 CF $13,000 $12,000 $15,000 a. Which projects are acceptable? Why? b. What is your decision if the projects are mutually exclusive