A number of activities that are part of a company's quality control system are listed below: Required: 1. Classify the costs associated with each of these activities into one of the following categories: prevention cost, appraisal cost. internal failure cost, or external failure cost. 2-a. Which type of costs are incurred in an effort to keep poor quality of conformance from occurring? 2-b. Which type of costs are incurred because poor quality of conformance has occurred?