On july 1, 2013, Meadows Life signed a one year contract with Global Corporation to provide them with maintenance services effective immediately. The monthly service charge to $10,000. Global Corporation paid $20,000 as an advance payment abd debited maintenance expense. If the fiscal year ends on december 31 for Global Corporation, the adjusting entry at the end of 2013 would: Debit maintenance expense, $60,000; credit prepaid maintenance, $20,000; credit maintenance services payable, $40,000. Debit prepaid maintenance expense, $40,000; credit maintenance expense, $60,000; Debit maintenance expense, $40,000; credit prepaid maintenance expense, $40,000 Debit prepaid maintenance expense, $20,000; credit prepaid maintenance expense, $20,000 Debit maintenance expense, $40,000; credit maintenance service payable, $40,000