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
Which of the following is most common symptom of tetanus 
Select and explain. 
A. Risus sardonicus, B. Trismus, C. Hyperreflexia, D. Tonic clonic convulsion
B: Trismus
Answer: B: Trismus 
Explanation: Trismus, due to spasm of masseter and pterygoids is the most common symptom of tetanus.