A firm must choose between two mutually exclusive projects, A & B. Project A has an initial cost of $11000. Its projected net cash flows are $900, $2000, $3000, $4000, and $5000 at the end of years 1 through 5, respectively. Project B has an initial cost of $15000, and its projected net cash flows are $7000, $5000, $3000, $2000, and $1000 at the end of years 1 through 5, respectively. At what cost of capital would the firm be indifferent to the two projects (i.e. be willing to choose either one)? 3.47% 6.58% 6.82% 7.66% 7.18%