(Click the icon to view the activity-cost categories.) Read the requirements. Requirement 1. Classify each activity cost as output unit-level, batch-level, product- or service-sustaining, or facility-sustaining. Explain each answer. Output unit-level costs are related to the number of units tested; required for each unit tested. Batch-level costs are related to a group of units of the service. They are not related to the number of units tested. Service-sustaining costs are costs used to support individual services regardless of the number of units or batches tested. Facility-sustaining costs are costs that can not be traced to individual services but support the company as a whole. Calculate the cost per test-hour for HT. (Round the rate to the nearest cent.) HT cost per test-hour