This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve supply of Lower Limb, Subject name: Anatomy
[{'content': 'Marked dermatome is \nSelect and explain. \nA. L4, B. L5, C. S1, D. S2', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Dermatome supply of the marked area is S2', 'role': 'assistant'}]