9. Jefferson uses the percent of sales method of estimating uncollectible expenses. Based on past history, 2% of credit sales are expected to be uncollectible. Sales for the current year are $5,550,000. Which of the following is correct? a. Uncollectible accounts are estimated to be $55,500 b. Uncollectible accounts are estimated to be $111,000 c. Bad debt expense is estimated to be $5,550 d. Bad debt expense is estimated to be $11,100