Answer:
correct option is $18,000
Explanation:
The nonconformance costs include the cost incurred in the internal and the external failure
Out of the given costs
The total internal failure cost = Net cost of material wasted during production = $10,000
and
the total external failure cost = Repairing and/or replacing products under warranty = $8,000
Hence,
the total nonconformance costs = $ 10,000 + $8,000 = $18,000
The correct option is $18,000