This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Uveal tract, Subject name: Ophthalmology
[{'content': 'Late onset endothalmitis after lens implantation is caused by - \nSelect and explain. \nA. Staphylococcus epidermidis, B. Pseudomonas, C. Streptococcus pyogenes, D. Propionibacterium acne', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coagulase-negative staphylococci are the most common causes of post-cataractendophthalmitis, and these bacteria and viridans streptococci cause most cases of post-intravitreal anti-VEGF injectionendophthalmitis, Bacillus cereus is a majorcause of post-traumatic endophthalmitis, and Staphylococcus aureus and ... Ref khurana 6/e', 'role': 'assistant'}]