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
[{'content': 'Receptors for vomiting is: \nSelect and explain. \nA. 5HT1, B. 5HT2, C. 5HT3, D. 5HT4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 5HT3', 'role': 'assistant'}]