In R. v. Mohan, [1994] 2 S.C.R.9 (SCC), psychiatric evidence was ruled inadmissible because it failed to show (a)__________________ because the expert evidence not related to the perpetrator 'smodus operandi. The similarities of these acts can be assessed by the jury itself. It likewise failed to show (b) ________, because the expert's group profiles were not sufficiently reliable to be helpful and not necessary to clarify an inaccessible matter and any information offered by the evidence would be outweighed by its. potential to mislead or distract the jury; and finally, it failed due to an (c), i.e. was rejected as part of evidentiary rule not allowing character evidence