Begginning irventory. purduses, and tales data for DVo players are as follows: The bininess maintains a perpetuIl inventocy system, costing by the first-ln, firsticut metrod. tayentery unc cost caturin. Cost of the Coods sold Sicheduie First-ith. First-gut Method Invntory Unit Cost column. Cost of the Goods Soid Schedule First-in, First-out Method