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: Ophthalmology
[{'content': "In Waardenburg's syndrome, following are seen except: \nSelect and explain. \nA. Widening of the eyebrow, B. Sho palpebral fissure, C. Interstital keratitis, D. Heterochromia iridis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Interstital keratitis', 'role': 'assistant'}]