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: Gynaecology & Obstetrics
[{'content': 'Vulval carcinoma metastasizes to : \nSelect and explain. \nA. Inguinal lymph nodes, B. Pre aoic lymph nodes, C. Para aoic lymph nodes, D. Pelvic lymph nodes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Inguinal lymph nodes', 'role': 'assistant'}]