This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Melanopsin is present in \nSelect and explain. \nA. Cones, B. Rods, C. Amacrine cell, D. Ganglion cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ganglion cells that mediate pupillary constriction and circadian rhythms are light sensitive, owing to a novel visual pigment, melanopsin.', 'role': 'assistant'}]