With reference to bacteroides fragilis all of the following statements are true except:

• A. It is the most frequent anaerobe isolated from clinical samples.
• B. It is not uniformly sensitive to metronidazole.
• C. The lipopolysaccharide formed by B.fragilis is structurally and functionally different from the conventional endotoxin.
• D. Shock and disseminated intravascular coagulation are common in bacteremia due to B.fragilis