Net credit sales for the month are $800,000. The accounts receivable balance is $160,000. The allowance is calculated as 7.5% of the receivable balance using the percentage of receivable basis. If the Allowance for Doubtful Accounts has a credit balance of $5,000, before the adjustment, what is the balance after the adjustment? a. $12,000 b. $7,000 c. $17,000 d. $31,000