Muscat Business Solution (MBS) follows perpetual inventory method. MBS purchase Merchandise 200 units of the HP Laser Printers at a cost of RO 120 each on credit on 10th June 2019. Terms of purchase are 5/10, n/60. MBS discovers that 50 units of HP Laser Printer is Samsung Laser Printer and returns to the supplier for a full refund on 12th June 2019.Which of the following is correct entry for Merchandise Return on 12th June 2019? O a. Dr. Accounts payable RO 24,000 Cr. Merchandise Inventory RO 24,000 O b. Dr. Merchandise inventory RO 18,000 Cr. Accounts payable RO 18,000 Oc Dr. Accounts payable RO 6,000 Cr. Merchandise Inventory RO 6,000 O d. Dr. Accounts Payable RO 18,000 Cr. Merchandise inventory RO 18,000 An item of merchandise was sold for RO 1600 cash by a business using the perpetual inventory system. The cost of Merchandise is RO 1200. Which of the following journal entry is correct for the Merchandise Sales? O a. Debit Merchandise inventory RO 1200 Credit Cost of goods sold RO 1200 O b. Debit Accounts receivable RO 400 Credit Sales RO 400 Oc Debit Cash RO 1600 Credit Sales RO 1600 O d. Debit Cost of goods sold RO 1600 Credit Merchandise inventory RO 1600