During the Spring Festival, the School Security Office plans to provide all students who do not return home during the Spring Festival with the opportunity to work and study, on the one hand, to alleviate the pressure of insufficient personnel in the Security Office during the Spring Festival; on the other hand, they want to ease the economic pressure for these poor college students. Which of the following does not question this plan of the Department:. ['Students who do not go home during the Spring Festival are not necessarily financially difficult students.', 'School public security tasks are difficult during the Spring Festival.', 'The security department has limited funds, and there are more students who do not return home during the Spring Festival.', 'Most students who do not go home are enrolled in winter vacation English classes.']