Question 97 of 100 -11 View Policies Current Attempt in Progress A trial balance before adjustments included the following: Debit Credit $1730000 Sales Sales returns and allowance Accounts receivable Allowance for doubtful accounts $57000 172000 2460 If the estimate of uncollectible accounts is made by taking 9% of gross account receivables, the amount of the adjustment is O $13020. $15259 $15480 O $17940