19. Using the income statement approach, an estimate ofuncollectible accounts may be calculated by taking a percentage of net ncome allowance for doubtful accounts. outstanding accounts receivable. credit sales. C. d. 20. The following data have been taken from the 19X4 accountingrecords of Kirby Corp Dr. Totalsales for 19X4 Credit sales for 19X4 Accounts receivable, 12/31/X4 Allowance for Doubtful Accounts, $450,000 360,000 $63,000 12/31/X4 3,000 Kirby estimates that 6% ofits accounts receivable will beur collectible. bad debt expense for 19X4? a. How much should Kirby record as $780 $2,700 $3,780 $6,780 C. d