Bert had accounts receivable of $330,000 and an allowance for doubtful accounts of $12,800 just before writing off as worthless an account receivable from Ernie Company of $2,100. After writing off this receivable what would be the balance in Bert's Allowance for Doubtful Accounts? $14,900 credit balance. $12,800 credit balance. $10,700 credit balance. $10,700 debit balance.