The four categories of costs associated with product quality costs are:

A. External failure, internal failure, prevention, and carrying.

B. External failure, internal failure, prevention, and appraisal.

C. External failure, internal failure, training, and appraisal.
D. Warranty, product liability, training, and appraisal.

Explanation:
Prevention costs are incurred to prevent defects. Appraisal costs are incurred to detect defective output during and after the production process. Internal failure costs are associated with defective output discovered before shipping. External failure costs are associated with defective output discovered after it has reached the customer.