This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Clostridium tetani is - 
Select and explain. 
A. Gram positive bacilli, B. Gram negative bacilli, C. Gram positive cocci, D. Gram negative cocci
A: Gram positive bacilli
Answer: A: Gram positive bacilli 
Explanation: None