Gregory Company had the following information in 2018: Accounts receivable 12/31/18.............................................$ 15,000 Allowance for uncollectible accounts credit balance 12/31/18 (before adjustment).....................................................................$ 1,100 Credit service revenue during 2018.....................................$ 40,000 Cash service revenue during 2018......................................$11,000 Collections from customers on account during 2018...............$ 52,000 Uncollectible account expense for 2018 is $1,115. What is the adjusting balance in the Allowance account at year-end for 2018. a. $1,100 b. $2,215 c. $1,115 d. $1,600