At each calendar year-end, Mazie Supply Co. uses the percent of accounts receivable method to estimate bad debts. On December 31, 2017, it has outstanding accounts receivable of $90,500, and it estimates that 4% will be uncollectible.

Prepare the adjusting entry to record bad debts expense for year 2017 under the assumption that the Allowance for Doubtful Accounts has:

1. (a)a $1,539 credit balance before the adjustment.
2. (b)a $453 debit balance before the adjustment.