Which of the following are relevant to a firm's decision to increase output: (a) short-run average total cost (b) short-run marginal cost, (c) long-run average total cost

Suppose your firm is considering investing in a project with the cash flows shown as follows, that the required rate of return on projects of this risk class is 10 percent, and that the maximum allowable payback and discounted payback statistics for the project are three and a half and four and a half years, respectively. use the irr decision to evaluate this project; should it be accepted or rejected