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': "Ureter pierces the following structure in pelvis \nSelect and explain. \nA. Round Ligament, B. Mackenrodt's ligament, C. Ovarian ligament, D. Broad ligament", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ureter pierces Mackenrodt's ligament where a canal, the ureteric canal is developed.", 'role': 'assistant'}]