Omar receives his cell phone bill in the mail for $100 on 9/28 and will pay the bill 10/4. What adjusting entry does Omar need to make on 9/28? A Debit: Accounts payable $100 and Credit: Telephone expense $100 B Debit: Telephone expense $100 and Credit Cash: $100 C Debit: Telephone expense $100 and Credit: Accounts payable $100 D Debit: Accounts payable $100 and Credit: Cash $100