Question 11 of Jacob's Event Planning Service has just prepared the unadjusted trial balance, which shows the following balances Salary expense debit $8,000 Service revenue credit $3,000 Interest expense $0 Late in this month, Jacob signed a contract with a new client, providing event planning services for an upcoming event. The company mak contract in the month the contract was signed, then the final balance of service revenue, as shown on the adjusted trial balance, should be OA. credit balance of $600 OB. credit balance of $3,000 OC. credit balance of $2,100 D. debit balance of $600