A firm is considering an investment opportunity. At a discount rate of 10%, the project has a positive net present value (NPV) of 3,548 and at a discount rate of 15%, it has a negative NPV of 7.989. The firm's cost of capital is 8%. What is the internal rate of return (IRR) of the project? O 11.5% O 12.5% O 8.0% O 13.5%