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 of choice for resistant Schizophrenia 
Select and explain. 
A. Olanzapine, B. Haloperidol, C. Clozapine, D. ECT
C: Clozapine
Answer: C: Clozapine 
Explanation: Clozapine is the drug of choice for resistant Schizophrenia.