two new software projects are proposed to a young, start-up company. the alpha project will cost $160.000 to develop and is expected to have an annual net cash flow of $30.000. the beta will cost $220.000 to develop and is expected to have an annual net cash flow of $60.000. the company is very concerned about their cash flow. using the payback period, which project is better from a cash flow standpoint? why?