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': "A person suffered an injury in right eye with a tennis ball. Following which he developed pain and on fundus examination a red spot is seen at the macula. What is the most probable diagnosis \nSelect and explain. \nA. Berlin's edema, B. Macular bleed, C. Macular hole, D. Macular tear", 'role': 'user'}, {'content': "Answer: A \nExplanation: A i.e. Berlin's edema", 'role': 'assistant'}]