Purchase-Related Transactions The Stationery Company purchased merchandise on account from a supplier for exist9, 300, terms 1/10, n/30. The Stationery Company returned exist1, 200 of the merchandise and received full credit. a. If Stationery Company pays the invoice within the discount period, what is the amount of cash required for the payment? exist b. Under a perpetual inventory system, what account is credited by Stationery Company to record the return? ____