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: Surgery
In tetanus infection: 
Select and explain. 
A. The disease is produced by the endotoxin of bacillus tetani, B. The toxin travels along the nerves to CNS, C. A child under the age of one year has an inborn immunity, D. The spasm does not affect respiration
B: The toxin travels along the nerves to CNS
Answer: B: The toxin travels along the nerves to CNS 
Explanation: None