This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular trauma , Subject name: Ophthalmology
[{'content': 'Most common intraocular foreign body retained is \nSelect and explain. \nA. Airgun pellets, B. Iron, C. Glass, D. Chisel', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Common foreign bodies responsible for such injuries include: chips of iron and steel (90%), paicles of glass, stone, lead pellets, copper percussion caps, aluminium, plastic and wood. It is impoant to note that during chopping a stone with an iron chisel, it is commonly a chip of the chisel and not of the stone which enters the eye. Ref khurana 6/e p433', 'role': 'assistant'}]