What is the appropriate balance for Allowance for Doubtful Accounts at year-end? Balance for allowance for doubtful accounts

Days Aount Less than 16 en 16 and 30 days Between 31 and 45 days Between 46 60 days and 75 days Over 75 days bC 3312.400 87.7co 19,200 ta.100 What the 'Or Doubtful Balance for for doubt'"' *counts S