One of the Many Reforms Undertaken by the Clunaic Monasteries

One of the many reforms undertaken by the Clunaic monasteries was to enforce the monastic vow of celibacy on all priests.Some segments of the Church rejected this reform claiming:

A) there was no biblical source for such a vow.
B) there had never been any rule against priests being married.
C) secular priests needed to experience life as their parishioners did.
D) that the biblical injunction to "be fruitful and multiply" should apply to everyone.
E) church fathers, such as Ambrose, had been married.