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: Gynaecology & Obstetrics
Increase Alfa - fetoprotein is seen in all except : 
Select and explain. 
A. Open spina bifida, B. Dysgerminoma, C. Endodermal sinus tumor, D. Bronchial aplasia
B: Dysgerminoma
Answer: B: Dysgerminoma 
Explanation: Dysgerminoma