All of the following beliefs/ideas were the official position of the medieval Roman Catholic Church except one. Which was a position held by those - like Martin Luther - who supported the Reformation?

A
One can have a relationship with God only through the church - specifically through a priest.

B
Salvation is obtained by faith as well as by doing good works.

C
The Bible should be available in people's common languages, to encourage them to read and study it.

D
Truth is found in both the scriptures and in the traditions of the church, passed-down through centuries.