This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'Area of fundus seen with direct ophthalmoscope is \nSelect and explain. \nA. 1 DD, B. 2 DD, C. 3 DD, D. 4 DD', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Direct ophthalmoscope is the most commonly practiced method for routine fundus examination. Once the retina is focused the details should be examined systematically staing from the disc, blood vessels, the four quadrants of the general background and the macula. Reference:', 'role': 'assistant'}]