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: Unknown
[{'content': 'The drug being given is ? \nSelect and explain. \nA. Ethacrydine lactate (0.1%), B. 20% mannitol, C. 50% Urea, D. Misoprostol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ethacrydine lactate (0.1%) is used only extra – amniotically.', 'role': 'assistant'}]