A kitchenware company is considering investing in a machine for producing a new chef-quality kitchen knife. Which of the cash flows below should be considered irrelevant cash flows for the proposed investment and be excluded from the NPV analysis? I. Installation cost of the machinery used to produce the new knife II. Lost revenue from other knives the company sells because of the introduction of the new knife III. Past R\&D expense for the new knife III only II and III I and II I only