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
Neural tube defect is best detected by 
Select and explain. 
A. USG, B. Chromosomal analysis, C. Amniocentesis, D. Placentography
C: Amniocentesis
Answer: C: Amniocentesis 
Explanation: C i.e. Amniocentesis