Dental Double Blind Study, true is ? A The research investigator is blind to the dependent & independent variable B The subject in the study do not know the examiner doing the study C The subject & the examiner do not know the details of the study D Only the examiner know the group to which subject belongs 💡 Explanation Double Blind Study, true is ? ✓ Correct Answer: C. The subject & the examiner do not know the details of the study