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': 'In extraperitoneal approach, to left sympathectomy the following may be injured - \nSelect and explain. \nA. Ureter, B. Gonadal vessels, C. A+B, D. IVC', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]