Although Luther's Disputes with the Church Generally Dealt with Matters

Although Luther's disputes with the Church generally dealt with matters of doctrine,he also had disputes with the papacy itself over:

A) the lifestyles of the popes themselves.
B) the means by which popes were chosen.
C) the pope's process for choosing bishops within the Germanic states.
D) his not being chosen for a bishopric in Mainz.
E) all of these