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': 'Elderly women with recurrent swelling and pain in the vulva, diagnosis is : \nSelect and explain. \nA. Hiradadenitis, B. Baholins cyst, C. Hematoma, D. Sebaceous cyst', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Baholins cyst', 'role': 'assistant'}]