Nicklin Corporation is considering two alternatives, code-named M and N. Costs associated with the alternatives are listed below: Alternative Alternative Supplies costs s 000 ,s 5 49,000 $ 49,000 29000 44,000 Power costs$ Inspection costs 42,000 31,000 Assembly costs $ Required: Which costs are relevant and which are not relevant in the choice between these two alternatives? 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.) Differential cost