Tuition Rises Almost Every Year, Yet Universities Seem to Have

Tuition rises almost every year, yet universities seem to have more and more students every year. What would explain this?

A) The demand for university education is rising more slowly than supply.
B) The supply of the university education had decreased and the demand for university education remained unchanged.
C) The demand for university education is rising more quickly than supply.
D) The supply of university education and demand for university education are both falling.