35. Betty Carson has performed $500 of accounting services for a client but has not billed the client as of the end of the accounting period. What adjusting entry must Betty make? a.Debit Cash and credit Unearned Service Revenue b.Debit Accounts Receivable and credit Unearned Service Revenue c.Debit Accounts Receivable and credit Service Revenue d.Debit Unearned Service Revenue and credit Service Revenue