The US five-star Admiral MacArthur commanded a million male divisions, galloping on the battlefield, but he was troubled by his young son who did not listen to discipline, read books, and hoped that he would not be able to enter the West Point military academy. How can he be an ordinary person? Adolescents and MacArthur's sons have different times and different ideas, but their degree of "rebellion and unrulyness" is inferior and it is becoming more and more difficult to discipline. This passage mainly supports the view that? ['It is a common phenomenon that young people are difficult to discipline.', 'No U. S. admiral can care about children, let alone ordinary people.', "No one is perfect, you can't care about your children, don't blame yourself.", 'Different methods of discipline for children of different ages.']