The following information is available for Buble Co. (All numbers are in millions.) December 31, 2021 December 31, 2020 Accounts Receivable, Net of Allowance for Doubtful Accounts of $300 and $350 Net Revenues $16,850 67,000 $15,600 61,000 The company recorded Bad Debt Expense of $21 (million) for 2021. Required: 1. What value of accounts receivable was written off during 2021? 2. What was the receivables turnover ratio for 2021? 1. Accounts Receivable Written-Off 2. Receivables Turnover Ratio million times 3. Has the turnover ratio improved or deteriorated compared to 2020 when the turnover was 4.3? Improved O Deteriorated