The word "avenue" (paragraph 4, line 1) probably means ______.

A．Because the university didn't treat its students and people not affiliated with Columbia fairly.
B．Because people not affiliated with Columbia were involved in physical assaults.
C．Because there would be an increasing resistance from the university against performing student activities.
D．Because people not affiliated with Columbia were getting told, "Don't come back".

A．To protect the privacy of the students.
B．It was not allowed by the board of the university.
C．Most of the students escaped during the scuffle.
D．To prevent a revealment of the violation.