The internal rate of return (IRR) rule can be best defined as: The IRR is the rate of return that sets the future value of all the future cash flows equal to zero. The IRR is the rate of return that sets the present value of all the future cash flows equal to zero. The break-even rate because its sets the present value and future value of a project's cash flow equal to zero. The rate that is greater than the required rate of return. The crossover rate