Lars Richards, CPA, has performed $2 , 000 of accounting services for a client but has not billed the client as of the end of the accounting period. What adjusting entry must Lars make? Select one: A. debit Accounts Recelvable and credit Unearned Revenue 8. debit Accounts Recelvable and credit Service Revenue C. debit Uneorned Revenue and credit Service Revenue D. debit Cosh and credit Uneorned Revenue .