public static void ChooseDataType()
        {
            ISweepstakesManager     sweepstakesManager;
            SweepstakesStackManager sweepstakesStackManager = new SweepstakesStackManager();
            SweepstakesQueueManager sweepstakesQueueManager = new SweepstakesQueueManager();
            MarketingFirm           marketingFirm;

            UI.SelectDataStorageType();
            string dataType = Console.ReadLine();

            dataType = dataType.ToLower();

            if (dataType == "stack")
            {
                sweepstakesManager = sweepstakesStackManager;
                marketingFirm      = new MarketingFirm(sweepstakesManager);
                marketingFirm.RunProgram();
            }
            else if (dataType == "queue")
            {
                sweepstakesManager = sweepstakesQueueManager;
                marketingFirm      = new MarketingFirm(sweepstakesManager);
                marketingFirm.RunProgram();
            }
            else if (dataType != "stack" || dataType != "queue")
            {
                ChooseDataType();
            }
        }