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: Anatomy
[{'content': "Triangle of doom is bounded by A/E \nSelect and explain. \nA. Vas deferens, B. Gonadal vessels, C. Cooper's ligament, D. Peritoneal fold", 'role': 'user'}, {'content': "Answer: C \nExplanation: C i.e. Cooper's ligament", 'role': 'assistant'}]