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': 'Pseudomembranous conjunctivitis is caused by – a) Gonococcusb) Staphylococcusc) Streptococcusd) Keratoconjunctivitis sicca \nSelect and explain. \nA. abc, B. bc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bacteria causing pseudomembranous conjunctivitis are corynebacterium diphtheriae, staphylococci, streptococci, H. influenzae, N. gonorrhoea.', 'role': 'assistant'}]