Gary Computer Store has credit sales of $500,000 in 2009 and a debit balance of $800 in the Allowance for Doubtful Accounts at year end before adjustments. As of December 31, 2010, $120,000 of accounts receivable remain uncollected. The credit manager of Gary prepared an aging schedule of accounts receivable and estimates that $4,800 will prove to be uncollectible. On March 4, 2011 the credit manager authorizes a write-off of the $1,000 balance owed by A. Mount.