I completely agree with mk. No one SI joint test is sensitive enough to rule out SI joint pain; it should be based upon a cluster of provocation tests which was used in the article posted by mk. The research in this article is consistent with my current learnings in PT school.
I choose E. none of the above
Diagnosis of Sacroiliac Joint Pain: Validity of individual provocation
tests and composites of tests Manual Therapy 10 (2005) 207–218. http://www.akuthota.com/Files/Syllabus/Laslett%20Sacroiliac.pdf