Answer:
A DEBIT to Estimated warranty liability
Explanation:
Based on the information given we were told that the company recognized an estimated warranty of the amount of $54,000 for its 2017 sales in which the year 2018 the company also repair costs of the amount of $21,000 which is related to products sold during the year 2017 which means that The journal entry to record the cost of repairs would include a debit to ESTIMATED WARRANTY LIABILITY .