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: Anatomy
[{'content': 'Dilator papillae is supplied by: \nSelect and explain. \nA. Occulomotor (III) cranial nerve, B. Sympathetic fibres from the V cranial nerve, C. Postganglionic parasympathetic fibers from Edinger Westphal nucleus, D. Postganglionic sympathetic fibers from cervical ganglion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Post ganglionic sympathetic fibers from cervical ganglion', 'role': 'assistant'}]