This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Which of the following has least extra-pyramidal side effect? \nSelect and explain. \nA. Haloperidol, B. Fluphenazine, C. Clozapine, D. Flupenthioxol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Clozapine and risperidone are atypical neuroleptics with least extrapyramidal side effects among all an psychotics.', 'role': 'assistant'}]