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': 'Which of the following is primary neurotransmitter responsible for lowering thermoregulatory set point in triggering hot flushes \nSelect and explain. \nA. Acetyl choline, B. Nor - Epinephrine, C. Dopamine, D. Glycine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nor-Epinephrine is primary neurotransmitter known to cause hot flushes in Menopausal woman.', 'role': 'assistant'}]