Why did the Renaissance begin?

Why did the Renaissance begin?
 
  A) The Christian world had always borrowed from the ancients; the continued expression of interest in these ancient writers was nothing new. This borrowing happened to introduce them to mathematicians and philosophers that they had not been acquainted with.
  B) This was a reevaluation of priorities after Europe survived the Black Plague and more secular pursuits ensued.
  C) The corruption of the Catholic Church caused the disenfranchisement of many parishioners. They parishioners were searching of a truer expression of worshipping God and they thought they could find that in the ancient philosophers and text.
  D) The rediscovery of ancient Greek and Roman art and architecture permeated this world bent on new discovery.
  E) All of these