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': 'In sympathetic opthalmitis first sign is - \nSelect and explain. \nA. Presence of KPs, B. Ciliary congestion, C. Tenderness of the globe, D. Disc oedema', 'role': 'user'}, {'content': "Answer: A \nExplanation: The first sign may be presence of retrolental flare and cells or the presence of keratic precipitates (KPs) on back of cornea. Other signs includes mild ciliary congestion, slight tenderness of the globe, fine vitreous haze and disc oedema which is seen occasionally. Ref : Parsons' 22nd edition , page no.398", 'role': 'assistant'}]