Net credit sales for the month are $100,000. The accounts receivable balance is $50,000. The allowance is calculated as 9% of the receivables balance using the percentage-of-receivables basis. If Allowance for Doubtful Accounts has a credit balance of $1,000 before adjustment, what is the balance after adjustment? Select one: O a. $9,000. O b. $8,000 c. $12,000 d. The correct answer is not available e. $3,500. O f. $4,500. Next page