Nicklin Corporation is considering two alternatives, code-named M and N. Costs associated with the alternatives are listed below: Supplies costs Power costs Inspection costs 16,000 $ 24,500 Assembly costs 29,000 18,000 62,000 55,00 36,000 36,000 Required: Which costs are relevant and which are not relevant in the a. Supplies costs Power costs Inspection costs Assembly costs b. What is the differential cost between Alternative M and Alternative N? (Negative amount should be indicated by a minus sign.) cost