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
Maternal Alpha-fetoprotein is increased in - 
Select and explain. 
A. Neural tube defects -, B. Diabetics, C. Fetal cardiac defects, D. Rubella
A: Neural tube defects -
Answer: A: Neural tube defects - 
Explanation: Ans-A