The revenue account of Company A has a balance of $76,000 at year end; the expense accounts have a total balance of $67,000. (assume normal balances). The first two closing entries have been posted; what would the correct 3rd closing entry be?

A:Debit retained earnings $9,000; Credit Income summary $9,000

B: Debit income summary $76,000; Credit income summary $67,000

C: Debit income summary $9,000; Credit retained earnings $9,000

D: cannot determine