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: Physiology
[{'content': 'Ovulation is due to surge of: September 2006, 2010 \nSelect and explain. \nA. FSH, B. LH, C. Prolactin, D. TSH', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: LH', 'role': 'assistant'}]