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': 'All are the structure of triangle of doom except? \nSelect and explain. \nA. Femoral nerve, B. External ilioc vessels, C. Genital branch of genitotemoral nerve, D. Vas deference', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]