please answe all of the questions

6. Suppose you are evaluating two mutually exclusive projects, Thing 1 and Thing 2, with the following cash flows: (a) If the cost of capital on both projects is 5%, which project, if any, would you choose? Why? (b) If the cost of capital on both projects is 8%, which project, if any, would you choose? Why? (c) If the cost of capital on both projects is 11%, which project, if any, would you choose? Why