This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
The following is an example of atypical antipsychotic 
Select and explain. 
A. Olanzapine, B. Haloperidol, C. Amitriptyline, D. Zuclopenthixol
A: Olanzapine
Answer: A: Olanzapine 
Explanation: K.D Tripathy essentials of medical pharmacology 7th edition . *atypical antipsychotics are olanzapine,clozapine,risperidone,quetiapine,aripiprazole *haloperidol belongs to butyrophenones antipsychotic *amitriptyline is TCAs *zuclopenthixol belongs to thioxanthene antipsychotics.