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: Surgery
[{'content': 'Inguinal lymphnode enlargement is seen in ? \nSelect and explain. \nA. Seminoma testis, B. Malignant melanoma foot, C. Ca cervix, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Malignant melanoma foot", 'role': 'assistant'}]