Net Zero Products, a wholesaler of sustainable raw materials, estimates uncollectible accounts using the allowance method at December 31. It prepared the following aging of receivables analysis. Days Past Due Total 0 1 to 30 31 to 60 61 to 90 Over 90 Accounts receivable $ 157,000 $ 92,000 $ 30,000 $ 13,000 $ 10,000 $ 12,000 Percent uncollectible 1 % 4 % 6 % 9 % 12 % a. Estimate the balance of the Allowance for Doubtful Accounts using the aging of accounts receivable method. b. Prepare the adjusting entry to record bad debts expense using the estimate from part a. Assume the unadjusted balance in the Allowance for Doubtful Accounts is a $2,200 credit. c. Prepare the adjusting entry to record bad debts expense using the estimate from part a. Assume the unadjusted balance in the Allowance for Doubtful Accounts is a $220 debit.