Mario was conducting research regarding the treatment of AIDS victims using stem cells. He found a source that was written recently and the author was known. Unfortunately, he could not determine if it had been peer reviewed.
Which of the following is a correct decision and justification Mario should make regarding the use of this source?
A. Mario should use the source. The author is unimportant.
B. Mario should use the source. The peer review is unimportant.
C. Mario should not use the source. The author is known.
D. Mario should not use the source. It has not been peer reviewed.