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: Pharmacology
An antipsychotic drug with a least extrapyramidal side effect is: 
Select and explain. 
A. Triflupromazine, B. Thioridazine, C. Pimozide, D. Trifluoperazine
B: Thioridazine
Answer: B: Thioridazine 
Explanation: None