Please help with questions 1-3. ASAP

Profit Center Responsibility Reporting for a Service Company Thomas Railroad Company organizes its three divisions, the North (N), South (S), and West (W) regions, as profit centers. The chief executive officer (CEO) evaluates divisional performance, using operating income as a percent of revenues. The following quarterly income and expense accounts were provided from the trial balance as of December 31 : The company operates three support departments: the Dispatching Department, the Equipment Management Department, and the Treasurer's Department. The Dispatching Department manages the scheduling and releasing of completed trains. The Equipment Management Department manages the railroad cars inventories. It makes sure the right freight cars are at the right place at the right time. The Treasurer's Department conducts a variety of services for the company as a whole. The following additional information has been gathered: 1. Prepare quarterly income statements showing operating income for the three regions. Use three column headings: North, South, and West. Do not round your interim calculations. 2. What is the profit margin of each region? Round to one decimal place, Identify the most successful region according to the profit margin. 3. What would you include in a recommendation to the CEO for a better method for evaluating the performance of the regions? a. The method used to evaluate the performance of the regions should be reevaluated. b. A better regional performance measure would be the return on investment (operating income divided by c. A better regional performance measure would be the residual income (operating income less a minimal regional assets). return on regional assets). d. None of these choices would be included. e. All of these choices (a,b&c) would be included