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: Anatomy
[{'content': 'Midpalmar space of hand communicates with all except - \nSelect and explain. \nA. Forearm space, B. Fascial sheath of 1st lumbrical, C. Fascial sheath of 2nd lumbrical, D. Fascial sheath of 3rd lumbrical', 'role': 'user'}, {'content': 'Answer: B \nExplanation: First lumbrical is a content of thenar space, not midpalmar space.', 'role': 'assistant'}]