This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': '"Nerve terminals release chemicals"-discovered by \nSelect and explain. \nA. Dale, B. Withering, C. Domagk, D. Langley', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It was discovered in 1914 by Henry Hallet Dale. Acetylcholine was confirmed as a neurotransmitter by Otto Loewi. Ref : guyton and hall textbook of medical physiology 12 edition page number:675,676,677', 'role': 'assistant'}]