This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infertility, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is true about obstructi azoospermia: \nSelect and explain. \nA. FSH and LH increased, B. Normal FSH and normal LH, C. LH raised/ Normal FSH, D. FSH raised, Normal LH', 'role': 'user'}, {'content': "Answer: B \nExplanation: Shaw's textbook of Gynaecology- 16th edn- pg no 244. Normal FSH and LH level indicates obstructive lesion in the vas or epididymis. High FSH indicates gonadal failure. Low FSH Indicates pituitary or hypothalamic failure.", 'role': 'assistant'}]