Abbott Company uses the allowance method of accounting for uncollectible accounts. Abbott estimates that 3% of net credit sales will be uncollectible. On January 1, the Allowance for Doubtful Accounts had a credit balance of $2,400. During the year, Abbott wrote off accounts receivable $100,000. There were no sales returns or sales discounts during the year. After the adjusting entry, the December 31, balance in the Bad Debt Expense will be totaling $1,800 and made credit sales of O a. $7,200 O b. $3,600 C. $1,200 O d. $3,000