(MIRR calculation) Artie's Wrestling Stuff is considering building a new plant. This plant would require an initial cash outlay of $6 million and would generate annual free cash inflows of $3 million per year for 6 years. Calculate the project's MIRR given: a. A required rate of return of 8 percent b. A required rate of return of 12 percent c. A required rate of return of 15 percent a. If the required rate of return is 8 percent, what is the project's MIRR? % (Round to two decimal places.) b. If the required rate of return is 12 percent, what is the project's MIRR? % (Round to two decimal places.) c. If the required rate of return is 15 percent, what is the project's MIRR? % (Round to two decimal places.)