Luther's Doctrine of "Justification by Faith" Meant That

Luther's doctrine of "justification by faith" meant that:

A) humans are saved by their faith in God's grace, not by the good works they do.
B) humans are saved by the good works they do.
C) faith in God can be justified by reason.
D) everyone who participates faithfully in the services of the Church will be saved.
E) faith can be justified only by the good works an individual does during his or her life.