"Secondary Scriptures" Appear in Some Religions, Including Islam and Judaism

"Secondary scriptures" appear in some religions, including Islam and Judaism, because

A) the primary scriptures are found to be faulty and in need of correction.
B) the primary scriptures may not be clear in their meaning and require an authoritative source to aid interpretation.
C) new prophets come along that add new words directly from God.
D) followers get tired of the old rules and want some new teaching.