Upon completing an aging analysis of accounts receivable, the accountant for Rosco Works prepared an aging of accounts receivable and estimated that $6,200 of the $99,200 accounts receivable balance would be uncollectible. The allowance for doubtful accounts had a $520 debit balance at year-end prior to adjustment. What is the amount of bad debt expense? Multiple Choice $520. $6,200. $6,720. $5,680.