When Mervyn's trial balance was extracted, the total of the debit balances was $500 more than the total of the credit balances. Which of the following errors is a possible explanation for the difference? A A cash sale for $250 had not been recorded B A cash sale for $250 had been recorded twice C A cash sale for $250 had been posted to the credit side of both the sales account and the cash account D A cash sale for $250 had been posted to the debit side of both the sales account and the cash account