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
Prodormal symptom complex of tetanus consists of - 
Select and explain. 
A. Restlessness, B. Headache, C. Masseter muscle spasm, D. All the above
D: All the above
Answer: D: All the above 
Explanation: Ans. is 'd' i.e., All the above Tetanus* Tetanus (lock jaw) is caused by exotoxin produced by Clostridium tetani.* After an incubation perod of 2 days to several weeks, a prodromal symptom complex of restlessness, headache, masseter muscle stiffness and muscle contractionsin the area of wound evolves.* Violent tonic generalized muscle spasms generally follow in 24 hours, culminating in acute respiratory arrest.