You Tell Your Patient That Her CDI Is Caused by a Bacterium

You tell your patient that her CDI is caused by a bacterium belonging to the genus Clostridium. Which of the following is true of all Clostridia?

A) They are Gram-positive, rod-shaped, endospore-forming obligate anaerobes.
B) They are encapsulated, flagellated, toxin-producing aerobes.
C) They are Gram-negative, rod-shaped, endospore-forming obligate aerobes.
D) They are flagellated and always cause significant inflammation.
E) Clostridial infections only occur if a state of dysbiosis exists in the host.