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 tocolytic drug results in pulmonary oedema (adverse effect)- \nSelect and explain. \nA. Ritodrine, B. Indomethacin, C. Nifedipine, D. Atosiban', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ritodrine", 'role': 'assistant'}]