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': 'You have checked the blood oestradiol levels of your patient and it comes as 150 pg/ml. The woman is LEAST likely to be in which phase of menstrual cycle? \nSelect and explain. \nA. Follicular, B. Ovulation, C. Luteal, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The normal oestradiol and progesterone levels during menstrual cycle is given below Oestradiol Follicular phase 30 - 200 pg/ml Ovulation phase 200 - 600 pg/ml Luteal phase 30 - 200 pg/ml Progestrone Follicular phase 0.06 - 3 mg/ml Luteal phase 4.5 - 20 pg/ml Ref: Essentials of Gynaecology by Lakshmi Seshadri, Edition 1, page - 43.', 'role': 'assistant'}]