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': 'The incidence of retained intraocular foreign bodies is maximum with injuries due to: \nSelect and explain. \nA. Bow and arrow, B. Chisel and hammer, C. Air-gun pellet, D. Glass', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Chisel and hammer', 'role': 'assistant'}]