The total of the balances in the payables control account $1,500 more than the total of the payable balances extracted from the purchase ledger .Which of the following would explain this difference ?

A、The purchase day book is overcast by $ 1,500.;
B、Discounts received have not been posted in the purchase ledger accounts.
;
C、Cash paid to payables has not been posted in some accounts in the purchase ledger.;
D、A contra entry between the purchase and sales ledgers has been omitted from the purchase
ledger but was posted in the control account.