Heller Corporation has aged its accounts receivable and estimated uncollectible accounts as follows (in thousands). Age of Receivables A/R Balance Estimated % uncollectible Current $9,900 1% 30-60 days past due $2,160 3% 61-90 days past due $1,530 6% Over 90 days past due $756 10% What bad debt expense should the company report for the current period? Select one: a. $331 thousand b. There is not enough information to determine the amount. c. $99 thousand d. $232 thousand O e. $5,940 thousand