Some students who like ball games in the middle and high schools of a middle school have participated in the school sports meeting. Therefore, some students who like art do not like ball games. In order for the above argument to be valid, what must be assumed about the high school students of the middle school? ['All students who like ball games dislike fine arts.', 'Students who have participated in school games all like ball games.', 'All the students who like art have not participated in the school sports meeting.', 'Some art-like classmates have not participated in the school sports meeting.']