On August 1, Tran Enterprises enters into a contract to provide public relations services for one year to Ngi Company for $18,000. On December 31, Tran has received $12,000 in cash, which it has recorded as a credit to Revenue. What is the correcting entry on December 31?

A Debit Revenue $4,500, and credit Accounts Receivable $4,500.

B Debit Accounts Receivable $6,500, and credit Revenue $6,500.

C Debit Accounts Receivable $4,500, and credit Revenue $4,500.

D Debit Revenue $4,500, and credit Deferred Revenue $4,500.