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A production line has four stations that all product must pass through before completion. Stations one through four can process a unit in 10, 15, 20, and 12 minutes, respectively. The worker at Station 2 develops a new approach to her work and reduces the process time to 12 minutes. What is the capacity of the production line after her new approach is implemented? 5 units per hour 3 units per hour O2 units per hour O6 units per hour 4 units per hour