A company's ledger accounts and their end-of-period balances before closing entries are posted are shown below. What net amount will be posted to Retained Earnings in the process of closing the Income Summary account? (Assume all accounts have normal balances.) O $16,780 debit. $18,280 credit. O $23,780 credit. O $16,780 credit. O $7,180 credit. Retained Earnings Dividends $7,000 9,600 Revenue Rent Expense 29,000 3,600 Salaries Expense 7,200 Insurance Expense 920 Deprec. Expense - equipment 500 Accum. Deprec.-equipment 1,500