A successful coffee stand that serves the workers in a large office building plans to increase its profits by adding oatmeal-a hot cereal popular among the workers-to its menu. The manager says that oatmeal is "the ultimate convenience food" because it can be served by the cup, as coffee is; further, offering oatmeal will enable the stand to get into the breakfast business without making a large investment, because it does not require elaborate cooking equipment. Which of the following would, if true, most strengthen the likelihood that the manager's plan will achieve its goal? ['Oatmeal manufacturers have recently reduced their oatmeal offerings, which had included oatmeal in microwaveable cups and convenient cereal bars made with rolled oats.', 'In order to offer more flexible schedules to their workers, several businesses in the office building will soon be expanding their hours.', 'The ingredients needed to make oatmeal are inexpensive and do not spoil easily the way many fresh breakfast foods typically sold at coffee stands do.', 'Supermarket sales of oatmeal and other cereals slowed this year following large gains last year.']