a firm must choose between two mutually exclusive projects, a & b. project a has an initial cost of $10000. its projected net cash flows are $800, $2000, $3000, $4000, and $5000 at the end of years 1 through 5, respectively. project b has an initial cost of $14000, and its projected net cash flows are $7000, $5000, $3000, $2000, and $1000 at the end of years 1 through 5, respectively. the irrs of projects a & b are, respectively:

9.92%; 10.88%

8.75%; 9.05%

9.92%; 12.83%

7.55%; 9.05%

11.44%; 12.83%