Costs associated with two alternatives, code$-$named Q and R$,$ being considered by Albiston Corporation are listed below:Alternative l$ $86,000$$ $42,000$$ $39,000$$$49,000$Alternative R$ $86,000$$ $41,100$$ $41,100$$ $49,0001$:$29$:$32$Supplies costsPower costsInspection costsAssembly costsRequired:a$.$ Which costs are relevant and which are not relevant in the choice between these two alternatives?b$.$ What is the differential cost between the two alternatives?a$.$ Supplies costsa$.$ Power costsa$.$ Inspection costsa$.$ Assembly costsb$.$ Differential cost