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
A 20 year old man complains of difficulty in reading the newspaper with his right eye, three weeks after sustaining a gun shot injury to his left eye. The most likely diagnosis is - 
Select and explain. 
A. Macular edema, B. Sympathetic ophthalmitis, C. Optic nerve avulsion, D. Delayed viterous hemorrhage
B: Sympathetic ophthalmitis
Answer: B: Sympathetic ophthalmitis 
Explanation: Symptoms in sympathizing eye usually develop after 4-8 weeks of injury to exciting eye. However, it can also develop early, earliest reported case is after 9 days of injury.