White Castle Is a Fast-Food Restaurant Chain That Is Famous

White Castle is a fast-food restaurant chain that is famous for its small,square hamburgers.The chain began prior to World War II.Which of the following would have been part of its specific environment during the war?

A) other fast-food restaurants that sell hamburgers
B) customers who eat its burgers at least once a week
C) the meat packing company that supplies its beef
D) government-mandated beef rationing as a result of the war