At Southeastern College, Students in the School of Engineering Pay

At Southeastern College, students in the School of Engineering pay tuition that is 50% higher than that of other students. The administration believes the cost is justified, as the materials and classrooms necessary for the engineering program cost more than that of other programs. Historically, 25% of students at Southeastern have been enrolled in the School of Engineering. This year, however, only 15% of students were engineering students.
Which of the following can be inferred from the above passage?

A) If not for the high prices paid by engineering students, the school could not afford the engineering program.
B) The higher prices in the engineering program have resulted in fewer students enrolling.
C) If tuition prices remained the same, Southeastern College is taking in less tuition revenue this year than last year.
D) The administration is justified in having a higher cost for the engineering program due to the higher material costs.
E) Professors in the Engineering school enjoy higher salaries than their peers in other departments.