This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': "The schematic diagram is depicting some features of autonomic and somatic nervous systems. The neurotransmitter at site 'F' is \nSelect and explain. \nA. Acetylcholine, B. Norepinephrine, C. Dopamine, D. Epinephrine", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Acetylcholine (ACh) is the primary transmitter at ANS ganglia and at the somatic neuromuscular junction .Katzung Pharmacology 12th edition Pg: 80', 'role': 'assistant'}]