B. At the end of the year the unadjusted trial balance of Koko Company included the following accounts: Debit Sales (95% represent credit sales) Accounts receivable Allowance for doubtful accounts Credit $100,000 $ 35,000 $ 2,490 The accountant is considering alternative methods of calculating the uncollectible accounts expense. Prepare the year-end adjusting entry for uncollectible accounts under each of the following independent assumptions: (a) Nikko uses the income statement approach to estimate uncollectible accounts expense, and uncollectible accounts expense is estimated to be 1% of credit sales. (b) Nikko uses the balance sheet approach to estimate uncollectible accounts expense, and aging the accounts receivable indicates the estimated uncollectible portion to be $3,000 ACCOUNT DEBIT CREDIT DATE (a)12/31 (b)12/31