A trial balance before adjustment included the following: Credit Debit $138,000 Accounts receivable Allowance for doubtful accounts Sales Sales returns and allowances $1,360 374,000 6,100 Prepare journal entries assuming that the estimate of uncollectible is determined by taking (1) 6% of gross accounts receivable (Credit account titles are automatically indented when the amount is entered. Do not indent manually.) Account Titles and Explanation Debit Credit (2) 4% of gross accounts receivable (assuming a $1,360 debit allowance account balance). (Credit account titles are automatically indented when the amount is entered. Do not indent manually.) Account Titles and Explanation Debit Credit