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: Unknown
Amount of amniotic fluid at 12 weeks is - 
Select and explain. 
A. 50 ml., B. 100 ml., C. 200 ml., D. 400 ml.
A: 50 ml.
Answer: A: 50 ml. 
Explanation: Ans-A