The following transactions for the month of March have been journalized and posted to the proper accounts. Mar. 1 The business received $10,000 cash and issued common stock to stockholders. Mar. 2 Paid the first month's rent of $600. Mar. 3 Purchased equipment by paying $3,000 cash and executing a note payable for $6,000. Mar. 4 Purchased office supplies for $700 cash. Mar. 5 Billed a client for $12,000 of design services completed. Mar. 6 Received $7,000 on account for the services previously recorded. What is the balance in Accounts Receivable? O A. $6,000 O B. $12,000 O c. $7,000 OD. $5,000