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QUESTION 28 Warranty service, handling complaints, and costs of litigation are examples of: O internal failure costs. O external failure costs. O appraisal costs. O prevention costs. O replacement costs. QUESTION 29 If average demand for an item is 20 units per day, safety stock is 50 units, and lead time is four days, the reorder point (ROP) will be: O 50 O 70 O 130 O 170 O 220 QUESTION 30 Potential costs of equipment breakdown do not include: O loss of output cost of idle workers. O damage to other equipment. O replacement of worn parts O injuries