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: Radiology
Amniocentesis is done at 
Select and explain. 
A. 12 - 14 weeks, B. 14 - 16 weeks, C. 8 - 10 weeks, D. 18 - 20 weeks
B: 14 - 16 weeks
Answer: B: 14 - 16 weeks 
Explanation: Amniocentesis normally done at 14 - 16 weeks.
Early Amniocentesis 12 - 14 week.