Deficiency of c6,c7,c8,c9 of complement is likely to cause infection of?

                                                        

Question 1:

Deficiency of c6,c7,c8,c9 of complement is likely to cause infection of:
a. E.coli
b. staphylococcus
c. Streptococcus
d. Neisseria

First Aid for the USMLE Step 1 2013 (First Aid USMLE)