A company’s trial balance failed to agree, the totals being:
  Debit                               $815,602 Credit                              $808,420
  Which one of the following errors could fully account for the difference?
  A    The omission from the trial balance of the balance on the insurance expense account $7,182 debit B     Discount allowed $3,591 debited in error to the discount received account C     No entries made in the records for cash sales totalling $7,182 D     The returns outwards total of $3,591 was included in the trial balance as a debit balance D  |