The ledger of Skysong Company at the end of the current year shows Accounts Receivable $80,000, Credit Sales $829,000, and Sales Returns and Allowances $40,000. Prepare journal entries for each separate scenario below. (a) If Skysong uses the direct write-off method to account for uncollectible accounts, journalize the entry at December 15 if Skysong determines that Matisse's $1,200 balance is uncollectible. (b) If Allowance for Doubtful Accounts has a credit balance of $1,600 in the trial balance, journalize the adjusting entry at December 31 , assuming uncollectibles are expected to be 11% of accounts receivable. (c) If Allowance for Doubtful Accounts has a debit balance of $502 in the trial balance, journalize the adjusting entry at December 31 , assuming uncollectibles are expected to be 10% of accounts receivable. (Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)