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: Pharmacology
Neurotransmitter which is released at the end organ of the parasympathetic division of ANS: 
Select and explain. 
A. Acetylcholine., B. Adrenaline., C. Non adrenaline., D. All of the above.
A: Acetylcholine.
Answer: A: Acetylcholine. 
Explanation: Non-adrenaline is secreted at the end organ of the sympathetic system except in sweat glands and hair follicle while acetylcholine is released at parasympathetic system.