This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Drug treatment of schizophrenic are: 
Select and explain. 
A. Trifluperazine, B. Clozapine, C. Haloperidol, D. All
D: All
Answer: D: All 
Explanation: A i.e. Trifluperazine; B i.e. Clozapine; C i.e. Haloperidol