This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
[{'content': 'Patient in shock. IV cannulation not possible, intraosseous line for IVF shock be done within: \nSelect and explain. \nA. 1 minute, B. 1.5 minutes, C. 2 minutes, D. 2.5 minutes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) 1.5 minutes* In patients on shock it is difficult to get peripheral IV access. So immediately get a central venous line or intraosseous line in 90 seconds.', 'role': 'assistant'}]