K The three-station work cell illustrated in the figure below has a product that must go through one of the two machines at station 1 (they are parallel) before proceeding to station 2. Capacity: 30 units/hr Station 1 Machine A Station 2 Station 3 Station 1 Machine B Capacity: 30 units/hr Capacity: Capacity: 4 units/hr 3 units/hr a) The bottleneck time of the system is 20 minutes per unit (enter your response as a whole number). b) is the bottleneck station. Station 3 Station 1 Station 2