to answer this question, I think it is very important for you to consider the elements of each major.
I cannot be 100% sure about this since I am not a criminology major but using a common sense I think that in order to interpret (if you are referring to interrogation) then I think it is best to understand the basic knowledge of the criminology first because without any foundations, you cannot interrogate anyway when you are pleading to judges.
Thus, if I were you then I would go for "CRIMINOLOGY"
thanks