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
Most common occular foreign body is - 
Select and explain. 
A. Chiesel and hammer, B. Glass, C. Plastics, D. Stone
A: Chiesel and hammer
Answer: A: Chiesel and hammer 
Explanation: The chipping stone with an iron chisel, it is commonly a chip of the chisel and not of the stone which enters the eye.