Feudalism,a System in Which a Person (Vassal)pledged Loyalty for Protection,was

Multiple Choice

Feudalism,a system in which a person (vassal) pledged loyalty for protection,was a well-established part of the agricultural system of the Middle Ages.How did this system relate to that of earlier hierarchies?

A) Feudalism was originally modeled after the Roman custom of patronage.
B) It compared with the established monastic culture.
C) It mirrored the code of chivalry.
D) Feudalism has its roots in early Christian monasticism.