Which Statement Accurately Reflects a Characteristic of a Well-Written Literature

Which statement accurately reflects a characteristic of a well-written literature review?

A) Only a few key reports by the same author should be included if that author has published extensively on the topic under study.
B) The review should primarily contain reports supportive of your general hypothesis about the problem under study.
C) The review should include reports that both support and contradict your own ideas.
D) The review should clearly identify points that have been proven by previous research.