Master Company's December 31, 2019, balances related to accounts receivable follow. Accounts receivable Allowance for doubtful accounts $80,000 Dr. 4,000 Cr. During 2020, $9,000 of accounts receivable is considered uncollectible, and no more effort to collect these accounts will be made. Total sales for 2020 are $240,000, of which $40,000 are cash sales. A total of $180,000 was collected on account during 2020. a. Assuming that Master uses the allowance method to estimate net accounts receivable and uses 9% of accounts receivable as its estimate of expected credit losses, prepare the (1) journal entries to record write-offs and bad debt expense for 2020, and (2) disclosure on gross and net accounts receivable on the balance sheet at December 31, 2020. b. How would the answers to part a change (if at all) assuming instead that the December 31, 2019, balance in the allowance for doubtful accounts was a debit balance of $1,000? a. 1. Date Dec. 31, 2020 Dec. 31, 2020 Account Name To record account write-off To record bad debt expense = Dr. 00 = = 2. Note: Do not use negative signs with your answers. Balance Sheet, December 31, 2020 Accounts receivable $ Less: Allowance for doubtful accounts 0 Accounts receivable, net $ b. 1. Date Dec. 31, 2020 Account Name Dr. = 0 0 To record account write-off Dec. 31, 2020 = = Oo 0 To record bad debt expense Note: Do not use negative signs with your answers. Balance Sheet, December 31, 2020 Accounts receivable $ Less: Allowance for doubtful accounts Accounts receivable, net $ Please answer all parts of the question. Cr. Cr. 00 0 0 00 00 Cash Accounts Receivable Allowance for Doubtful Accounts Interest Receivable Inventory Inventory-Estimated Returns Refund Liability Sales Revenue Sales Returns Sales Discount Sales Discount Forfeited Cost of Goods Sold Bad Debt Expense N/A