This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
One of the following statement about tetanus is true: 
Select and explain. 
A. Caused by C. Tetani, B. Anaerobic infection, C. Central spores, D. Cannot be prevented
A: Caused by C. Tetani
Answer: A: Caused by C. Tetani 
Explanation: Ans: a