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
True statements about Pneumococcus are all except: 
Select and explain. 
A. Pneumolysin a thiol activated toxin, exerts a variety of effects on ciliary and PMN’s action, B. Autolysin may contribute to the pathogenesis of pneumococcal disease by lysing bacteria, C. Anticapsular antibodies are serotype specific, D. The virulence of pneumococci is dependent only on the production of the capsular polysaccharide
D: The virulence of pneumococci is dependent only on the production of the capsular polysaccharide
Answer: D: The virulence of pneumococci is dependent only on the production of the capsular polysaccharide 
Explanation: None