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': 'Which of the following drugs has both 5HT4 agonist and D2 antagonist property \nSelect and explain. \nA. Ondansetron, B. Metoclopramide, C. Benzhexol, D. Ibutilide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Metaclopramide is a prokinetic drug which is 5HT4 agonist and D2 antagonist used as antienetic.', 'role': 'assistant'}]