4. Double Bounce Trampolines produces two models of trampolines for backyard fun. The "Original", and the recently introduced "Deluxe". The Deluxe model introduced several safety features that were intended to scare overly protective parents into upgrading. Since its introduction, the deluxe model has been increasing in sales, but at the same time, the company's profits have been declining. The CFO believes that the company's traditional costing system may be to blame. Currently, the company uses direct-labor hours as the basis for applying overhead. The company estimates that it will incur $600,000 in overhead costs in the next year. The following cost data is known: The CFO wishes to explore an activity-based costing svstem Required: a.) Under the traditional costing method: i. Compute the predetermined overhead rate. ii. Determine the unit cost of each product. b.) Under activity-based costing: i. Compute the activity rates for each activity. ii. Determine the expected unit cost of each product