A project has the following cash flows: Year o 1 2 3 4 Cash Flows - $680 $100 $200 $300 $400 Under which of the following cost of capital would you be willing to accept the project based on the IRR rule? 8% O 16% You'll accept the project when the cost of capital is either 8% or 12%. O 12% What is the payback period for the project in question #7? 3.38 years 3.0 years 4.5 years O 3.2 years