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
Neurotoxin of tetanus acts on 
Select and explain. 
A. Synapse, B. Muscle, C. Brain, D. Spinal Cord
D: Spinal Cord
Answer: D: Spinal Cord 
Explanation: None