This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special Senses: Vision and its Elements, Subject name: Physiology
[{'content': 'Retinal cells which secrete acetyl choline? \nSelect and explain. \nA. Bipolar cells, B. Ganglion cells, C. Amacrine cells, D. H cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Amacrine cellsAmacrine cells secrete at least eight types of transmitter substances, including GABA, glycine, dopamine, acetylcholine and indolamine, all of which normally function as inhibitory neurotransmitters.', 'role': 'assistant'}]