What Was the Focus of Luther's Pamphlet, the Babylonian Captivity

Multiple Choice

What was the focus of Luther's pamphlet, The Babylonian Captivity of the Church ?

A) He attacked the sacramental system of the church.
B) He outlined the doctrine of Luther in German.
C) He explained the Lutheran liturgy.
D) He attacked abuses of the Catholic clergy in north Africa.
E) He justified transubstantiation.