One of Peter Abelard's Greatest Intellectual Accomplishments Was to

One of Peter Abelard's greatest intellectual accomplishments was to

A) divorce scholarship from church teachings.
B) champion a moderate realism that held that the "universals" existed,but only as mental concepts and devices.
C) undermine the Aristotelian ideas that had dominated learning in the earlier Middle Ages.
D) create a convincing argument for an extreme realism that completely rejected universals.