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: Social & Preventive Medicine
Three doses of tetanus vaccine provides immunity for 
Select and explain. 
A. 10 years, B. 1 year, C. 5 years, D. 15 years
A: 10 years
Answer: A: 10 years 
Explanation: None