Which of the Following Is True

Which of the following is true?

A) During the late nineteenth century, the primary pedagogical methods of physical education were gymnastics, calisthenics, and exercise programs.
B) The best known of these physical education programs were based on the work of the German system of gymnastics developed by Friedrich Jahn.
C) The German Turners who immigrated to the United States believed in the value of physical education and actively campaigned for mandatory physical education in the nation's schools.
D) All of the above.
E) B and C only.