At the end of the current year, Accounts Receivable has a balance of $3,750,000, Allowance for Doubtful Accounts has a credit balance of $22,750, and sales for the year total $48,400,000. Using the aging method, the balance of Allowance for Doubtful Accounts is estimated as $390,000. a. Determine the amount of the adjusting entry for uncollectible accounts