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': 'Increased estrone levels is PCOD is derived from \nSelect and explain. \nA. Testosterone, B. Androstenedione, C. Dehydro epiandrosterone, D. GnRH', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Elevated androstenedione levels contribute to an increase in estrone levels through peripheral conversion of androgens to estrogens by aromatase.', 'role': 'assistant'}]