During the Transformation of the Roman Empire, Becoming a Monk

During the transformation of the Roman Empire, becoming a monk and living a life of self-denial was seen as

A) heroic and admirable-a living martyrdom that emulated the sacrifice of Christ.
B) the necessary qualification to become a bishop or an abbot.
C) valid only if the monk engaged in social service.
D) a perversion of Jesus's teachings derived from Greek philosophy.