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
All of the following drugs are classified as atypical antipsychotics, EXCEPT: 
Select and explain. 
A. Olanzepine, B. Clozapine, C. Risperidone, D. Thioridazine
D: Thioridazine
Answer: D: Thioridazine 
Explanation: Thioridazine is a first generation antipsychotic. Commonly used atypical antipsychotics are:ClozapineRisperidoneOlanzapineQuetiapineZiprasidoneAripiprazoleFirst generation antipsychotics are:ChlorpromazineTrifluoperazinePerphenazineLoxapineHaloperidolFluphenazineThiothixeneRef: Reus V.I. (2012). Chapter 391. Mental Disorders. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo (Eds), Harrison's Principles of Internal Medicine, 18e.