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: Pediatrics
[{'content': 'What is the specific marker of Neural tube defects \nSelect and explain. \nA. Estriol, B. Inhibin A, C. Acetylcholinesterase, D. Pregnancy - associated plasma protein A', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Acetylcholinesterase is the specific biochemical marker for neural tube defects.', 'role': 'assistant'}]