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
The schematic diagram is depicting some features of autonomic and somatic nervous systems. The neurotransmitter at site 'F' is 
Select and explain. 
A. Acetylcholine, B. Norepinephrine, C. Dopamine, D. Epinephrine
A: Acetylcholine
Answer: A: Acetylcholine 
Explanation: Acetylcholine (ACh) is the primary transmitter at ANS ganglia and at the somatic neuromuscular junction .Katzung Pharmacology 12th edition Pg: 80