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': 'In contrast to AUB - O, AUB - E is \nSelect and explain. \nA. More responsive to cyclic oral progestins., B. Relatively unresponsive to progestins., C. Responds to short duration treatment with MPA., D. Less responsive to combined OCPs.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: AUB - E (endometrial) is relatively unresponsive to cyclic oral progestins.', 'role': 'assistant'}]