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: Anaesthesia
[{'content': 'Anesthetic agent/s which have tocolytic effect are? \nSelect and explain. \nA. Halothane, B. Enflurane, C. Isoflurane, D. All the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All the above Halothane, enflurane and isoflurane produce a dose dependent decrease in uterine tone (tocolysis). Studies of isoflurane demonstrate that halogenated compounds reduce both the frequency of uterinecontractions and the interval between them.", 'role': 'assistant'}]