Consider the following distribution network. The first process, process A$,$ is unloading cargo off of ships in California ports. Let$$s assume that this activity has a rate of $57,000$ units per day. The next step is Process B$,$ which is to load trailers for the shipment to the DC $($distribution center$),$ assuming a rate of $60,000$ units per day. The goods are then processed at the DC$,$ process C$,$ which involves sorting and packing at the rate of $78,000$ units per day. Lastly, there is Process D$,$ which involves shipping trailers of goods to customers at a rate of $48,000$ units per day. Assume that the system is working $24$ hours per day.