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': 'Perforating injuries with retained intraocular foreign body are more serious than those without because of: \nSelect and explain. \nA. More chances of infection, B. Deleterious effects of foreign bodies, C. More chances of sympathetic ophthalmitis, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Deleterious effects of foreign bodies', 'role': 'assistant'}]