Answer:
A. $5,460
Step-by-step explanation:
Expected rate of defects = 7%
Average repair cost = $70
Total sales = 1,200 units
Actual defective units = 6
Liability for product warranties (L) at month-end should be the difference between the expected warranty costs (EW) and the actual warranty (AW) costs:

Liability for product warranties at month-end should be $5,460.