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
The life of preserved semen for aificial insemination is - 
Select and explain. 
A. One year, B. Two year, C. Five year, D. Ten year
D: Ten year
Answer: D: Ten year 
Explanation: Ans. is 'd' i.e., Ten years