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
5HT2A antagonist drug is ? 
Select and explain. 
A. Clozapine, B. Cisapride, C. Sumatriptan, D. Ketanserin
D: Ketanserin
Answer: D: Ketanserin 
Explanation: Ans. is 'd' i.e., Ketanserin