Answer:
b. debit to bad debt expense for $3,921
Explanation:
Bad debt are debts owed to a business and which cannot be collected. Theses debts occurs during the course of business transaction and are caused by fraud, a company avoiding its obligation to pay or trade disagreements.
With regards to the above, the adjustment to bad debts expense will be the difference between accounts receivable and doubtful accounts.
Bad debts expense = $4,731 - $810 = $3,921