McCaskey Corporation uses an activity-based costing system with the following three activity cost pools: The Other activity cost pool is used to accumulate costs of idle capacity and organization-sustaining costs. The company has provided the following data concerning its costs: The activity rate for the Fabrication activity cost poof is closest tos, Multiple Choice $0.99 per machine-hour $331 per machine hour 52.59 per machine-hoar 52.2t per.machine hour