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': 'Most common type of colour blindness is \nSelect and explain. \nA. Protanopes, B. Tritanopes, C. Deuteranopes, D. Hamarlopes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Protanopes - Red is defective.\nTritanopes - blue is defective.\nDeuteranopes - Green is defective.', 'role': 'assistant'}]