Allowance for Doubtful Accounts has a credit balance of $500 at the end of the year (before adjustment), and uncollectible accounts expense is estimated at 2% of sales. If sales are $600,000, the amount of the adjusting entry to record the provision for doubtful accounts is:______.a. $12,500.b. $11,500.c. $12,000.d. None of these answers are correct.