The following transactions for the month of March have been journalized and posted to the proper accounts. Mar. 1 Maryam invested $9,000 cash in her new design services business. Mar. 2 Paid the first month's rent of $800. Mar. 3 Purchased equipment by paying $3,000 cash and executing a note payable for $5,000. Mar. 4 Purchased Office Supplies for $750 cash. Mar. 5 Billed a client for $18,000 of design services completed. Mar. 6 Received $8,000 on account for the services previously recorded. What is the balance in Accounts Receivable? Select one: O $18,000 O $10,000 O $5,000 O $8,000 O $2,000