Match the following cost related terms with the appropriate description or definition. costs that vary in total, directly and proportionately with volume Answer 1 costs requiring future expenditures, may or may not be relevat Answer 2 benefits forgone when a decision is made Answer 3 costs charged to expense in the period they are incurred Answer 4 costs that differ between alternatives Answer 5 costs that do NOT vary in total with changes in volume Answer 6 costs of labor and overhead which are included in inventory Answer 7 past costs, never relevant Answer 8 costs related to and charged to inventory