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: Gynaecology & Obstetrics
The percentage of water in Liquor Amnii is: 
Select and explain. 
A. 42%, B. 64%, C. 76%, D. 99%
D: 99%
Answer: D: 99% 
Explanation: 99%