If All University Students Had to Pay the Full Cost

If all university students had to pay the full cost of their education,

A) the economic efficiency of the higher education system would be greatly enhanced.
B) vertical equity would be enhanced,since university students would internalize the externalities of their educations.
C) horizontal equity would be worsened because university students in general come from the lowest- income families.
D) the federal debt could be eliminated.
E) they would probably choose less education than what is socially optimal.