This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
True about Clostridium teium is 
Select and explain. 
A. Gram variable, B. Terminal spore, C. Produces exotoxin, D. Causes septicemic orchitis
A: Gram variable
Answer: A: Gram variable 
Explanation: Clostridium teium is easily decolourized in Gram-stained smears and can be mistaken for a Gram-negative organism. However, Clostridium teium does not grow on selective media for Gram-negative organisms. Reference: Textbook of Microbiology; Anathanarayan and paniker&;s; 9th edition