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 complete albinism the colour of iris is: \nSelect and explain. \nA. White, B. Black, C. Pink, D. Blue', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Pink', 'role': 'assistant'}]