The following transactions for March have been journalized and posted to the proper accounts. Mar. 1 The business received a $10,000 cash contribution from the owner. Mar. 2 Paid the first month's rent of $800. Mar. 3 Purchased equipment by paying $4,000 cash and executing a note payable for $6,000. Mar. 4 Purchased office supplies for $500 cash. Mar. 5 Billed a client for $14,000 of design services completed. Mar. 6 Received $6,000 on account for the services previously recorded. What is the ending balance in the Service Revenue account? $16,000 $10,000 $14,000 $6,000