A company had revenues of $52,500 and expenses of $42,500 for the accounting period. The company paid $5,775 cash in dividends to the owner (sole shareholder). Which of the following entries could not be a closing entry?

a. Debit Income Summary $10,000; credit Retained Earnings $10,000.

b. Debit Income Summary $52,500; credit Revenues $52,500.

c. Debit Revenues $52,500; credit Income Summary $52,500.

d. Debit Income Summary $42,500, credit Expenses $42,500.