Exercise 7-09 The trial balance before adjustment of Grouper Inc. shows the following balances. Dr. Cr. Accounts Receivable Allowance for Doubtful Accounts Sales Revenue (all on credit) $100,800 1,960 $761,600 Give the entry for estimated bad debts assuming that the allowance is to provide for doubtful accounts on the basis of (a) 4% of gross accounts receivable and (b) 5% of gross accounts receivable and Allowance for Doubtful Accounts has a $1,880 credit balance. (If no entry is required, select "No Entry" for the account titles and enter o for the amounts. Credit account titles are automatically indented when the amount is entered. Do not indent manually.) Debit Credit No. Account Titles and Explanation (a) (b) Click if you would like to Show Work for this question: Open Show Work