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Question 2 ( 2+3 points) Consider the following four-stage process: One worker is assigned to each stage. The activity time (in [min/unit]) for each stage is: (a) Which stage is the bottleneck? What is the process capacity in [units/hr]? (b) Suppose the steps in activity A are made easier, so the activity time per unit in step A is reduced by 60% (to 2.4 [min/unit]). How much does the capacity of the entire process increase in [units/hr]