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An electrical utility needs to generate 6,300 megawatts of electricity today. It has five generators (A, B, C, D, and E). If any electricity is generated by a glven generator, that generator must be started up and a fixed start-up cost is incurred. There is an additional cost for each megawatt generated by a generator. These costs, as well as the maximum capacity of each generator, are shown in the following table. Click here for the Excel Data File Formulate and solve this model on a spreadsheet. a. Determine the minimum cost plan that meets the electrical needs for today. Note: Leave no cells blank. Enter " 0 " wherever required. b. Determine the total cost