i) What is the cost of capital? What role does the cost of capital play in the firm's long-term investment decisions? How does it relate to the firm's ability to maximize shareholder wealth? (10 marks) ii) Do the net present value (NPV) and internal rate of return (IRR) always agree with respect to accept-reject decisions? With respect to ranking decisions? Explain. (6 marks) iii) Robin Millar has the opportunity to invest in project A that costs $18,000 today and promises to pay annual end-of year payments of $4,400, $5,000, $5,000, $4,000, and $3,600 over the next 5 years. Determine the payback period for project A. (4 marks)