---> Please provide the step-by-step solution. <--- Include as much detail as possible, and show the formulas you used. Thank you.

Chapter 06, Reading Question 07 x Your answer is incorrect. Descartes' rule of signs is defined by the number of sign changes in the cash flow profile, and there are not four sign changes. Given the following end-of-year cash flows, which one of the following statements is correct? End of year 0: -$10 End of year 1: $5 End of year 2: $6 End of year 3: $8 End of year 4: $10 By Descartes' rule of signs, there will be at most four positive internal rate of return (IRR) values. By Descartes' rule of signs, there will be at most three positive internal rate of return (IRR) values. By Descartes' rule of signs, there will be at most two positive internal rate of return (IRR) values. By Descartes' rule of signs, there will be at most one positive internal rate of return (IRR) value. LINK TO TEXT