The following information is available for Nature's Best Corporation about the age of its receivables at December 31, its year end: Number of days outstanding 0-30 31-60 61-90 Over 90 $400,000 $240,000 $200,000 $80,000 Accounts Receivable 3% 5% 10% 15% Estimated percentage uncollectible $12,000 $12.000 $20,000 $12,000 Estimated Uncollectible Accounts Instructions (12 marks) a) Using the above aging schedule, determine the total estimated uncollectible accounts. b) Assuming that Allowance for Doubtful Accounts has an unadjusted credit balance of 516,000, prepare the journal entry to record bad debts expense at December 31. c) Assuming that Allowance for Doubtful Accounts has an unadjusted debit balance of 58,400, prepare the journal entry to record bad debts expense at December 31