Below is OG10 Q15. All the answer choices use being. But as discussed by many people, use of being is almost always wrong on GMAT. So just wanted to know under what conditions being as well as to be can be a correct choices.

In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings.
which may be violent without their being grounded in mental disease, from genuine manic-depressive
psychosis.
(A) mood swings, which may be violent without their being grounded in mental disease, from genuine
manic-depressive psychosis

(B) mood swings, perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis ,

(C) between mood swings, which may be violent without being grounded in mental disease, and genuine
manic-depressive psychosis

(D) between mood swings, perhaps violent without being grounded in mental disease, from genuine
manic-depressive psychosis

(E) genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease

btw OA is C
idiom usage between X and Y.

Thanks
Amit