The following transactions for the month of March have been journalized and posted to the proper accounts. Mar. 1 The business received $ 10 comma 000 cash and issued common stock to stockholders. Mar. 2 Paid the first month's rent of $ 700. Mar. 3 Purchased equipment by paying $ 1 comma 000 cash and executing a note payable for $ 6 comma 000. Mar. 4 Purchased office supplies for $ 750 cash. Mar. 5 Billed a client for $ 13 comma 000 of design services completed. Mar. 6 Received $ 9 comma 000 on account for the services previously recorded. What is the balance in Accounts Receivable? A. $ 13 comma 000 B. $ 9 comma 000 C. $ 6 comma 000 D. $ 4 comma 000