True statements about Pneumococcus are all except:

• A. Anticapsular antibodies are seotype specific
• B. The virulence of pneumococci is dependent only on the production of the capsular polysaccharide
• C. Pneumolysin a thiolactivated toxin,exerts a variety of effects on ciliary and PMN's
• D. Autolysin may contribute to the pathogenesis of pneumococcal disease by lysing the bacteria