This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Otto Loewi is famous for discovery of \nSelect and explain. \nA. Succinyl choline, B. Acetyl choline, C. Adrenaline, D. Noradrenaline', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Otto Loewi is famous for discovery of acetylcholine for which he received a Nobel price. so the option 2.(Reference: www.nobelprize.org)', 'role': 'assistant'}]