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
Perforating injuries with retained intraocular foreign body are more serious than those without because of: 
Select and explain. 
A. More chances of infection, B. Deleterious effects of foreign bodies, C. More chances of sympathetic ophthalmitis, D. All of the above
B: Deleterious effects of foreign bodies
Answer: B: Deleterious effects of foreign bodies 
Explanation: Ans. Deleterious effects of foreign bodies