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': 'A prokinetic drug which lacks D2 receptor antagonistic action is which one of the following? \nSelect and explain. \nA. Metoclopramide, B. Domperidone, C. Cisapride, D. Chlorpromazine', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Cisapride o Cisapride has 5-HT4 agonistic activity (without any D2 blocking activity).", 'role': 'assistant'}]