4. Consider a process consisting of five resources that are operated 8 hours per day. The process works on three different products, A, B, and C : Demand for the three different products is as follows: product A, 40 units per day; product B, 50 units per day; and product C, 60 units per day. a. What is the bottleneck? b. What is the flow rate for each flow unit, assuming that demand must be served in the mix described above (i.e., for every four units of A, there are five units of B and six units of C)