What Compelled Martin Luther to Nail His Ninety-Five "Theses" to the Door

What compelled Martin Luther to nail his ninety-five "theses" to the door of a Wittenburg cathedral, thus launching the Protestant Reformation?

A) He was angry that the Church refused to allow him to sell indulgences to
Other churchgoers.
B) He wished to combat the Renaissance idea that all Christians could essentially act
As their own priests.
C) He condemned the greed of the Catholic Church and believed salvation could not
Be purchased.
D) He insisted on holding all religious services in Latin and placing far less emphasis
On the Bible.
E) He actively sought to bring decades of organized political strife to Europe.