Which one of the following is the correct presentation of accounts receivable and its contra account on the balance sheet? accounts receivable $642,000 less: bad debt expense (17,000) less: allowance for doubtful accounts (2,000) $623,000 accounts receivable $642,000 plus: allowance for doubtful accounts 2,000 $644,000 accounts receivable $642,000 less: allowance for doubtful accounts (2,000) $640,000 accounts receivable $642,000 less: bad debt expense (17,000) $625,000