From the following list, identify the accounts that should be closed to Income Summary at the end of the fiscal year under a perpetual inventory system: (a) Accounts Payable, (b) Advertising Expense, (c) Cost of Merchandise Sold, (d) Dividends, (e) Merchandise Inventory, (f) Sales, (g) Supplies, (h) Supplies Expense, (i) Wages Payable.