Norris, Inc. is considering two options, P& Q. Costs associated with the options are listed below: Supplies costs Assembly costs Power costs Inspection costs Option P $77,000 $49,000 $29,000 $ 42,000 Optione $68,000 $49,000 $44,000 $31,000 Required: a. Which costs are relevant and which are not relevant in the choice between these two options? b. What is the differential cost between the two options? a. Supplies costs Assembly costs Power costs Inspection costs b. Differential cost