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
[{'content': 'Conjunctivitis in newborn is commonly caused by: \nSelect and explain. \nA. Streptococcus, B. Gonococcus, C. Pseudomonas, D. Chlamydia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Chlamydia', 'role': 'assistant'}]