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': "An object located in the panum's area stimulates \nSelect and explain. \nA. Fusion, B. Confusion, C. Diplopia, D. Stereopsis", 'role': 'user'}, {'content': "Answer: D \nExplanation: Panum's area of fusion stimulates stereopsis.", 'role': 'assistant'}]