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: Microbiology
[{'content': "True statements about Pneumococcus are all except- \nSelect and explain. \nA. Pneumolysin a thiolactivated toxin, exerts a variety of effect on ciliary & PMN's, B. Autolysin may contribute to the pathogenesis of pneumococcal disease by lysing the bacteria, C. Anticapsular antibodies are serotype specific, D. The virulence of pneumococci is dependent only on the production of the capsular polysaccharide", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]