Costs associated with two alternatives, code-named Q and R, being considered by Albiston Corporation are listed below: Alternative Q Alternative R Supplies costs $ 74,000 $ 74,000 Power costs $ 34,200 $ 33,400 Inspection costs $ 27,000 $ 33,400 Assembly costs $ 39,000 $ 39,000 Required: a. Which costs are relevant and which are not relevant in the choice between these two alternatives