Suppose a company is considering two investment projects, Project A and Project B. The company's risk-free rate is 5% and its required rate of return is 12%. The following table shows the cash flows for each project:

Year	Project A Cash Flow	Project B Cash Flow
1	$100	$50
2	$200	$100
3	$300	$150
4	$400	$200
5	$500	$250

Calculate the net present value (NPV) and the internal rate of return (IRR) for each project, and advise the company on which project it should choose based on risk management principles.