Classify the following quality costs as prevention costs,appraisal costs, internal failure costs, or external failurecosts:
1. Internal audit to ensure that quality guidelines andprocesses are being followed
2. Repairing products in the field
3. Providing engineering assistance to selected suppliers toimprove their product quality
4. Correcting a design error discovered during productdevelopment
5. Settling a bodily injury law suit caused by a defectiveproduct
6. Customer complaint department
7. Quality control circles
8. Continuing supplier verification
9 Redesigning a product to eliminate a product defect
10 Lost sales because of product quality concerns
