This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Most specific marker for neural tube defects is \nSelect and explain. \nA. Alpha-fetoprotein, B. Unconjugated estriol, C. Acetylcholinesterase, D. Pseudocholinesterase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Both alpha-fetoprotein and acetylcholinesterase in amniotic fluid are markers for neural tube defects. But acetylcholinesterase is the most specific marker. Ref : Dutta book of obstetrics 8th Ed', 'role': 'assistant'}]