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
Serum a-fetoprotein level is elevated in - 
Select and explain. 
A. Endodermal cell tumor, B. Immature teratoma, C. Choriocarcinoma, D. Dysgerminoma
A: Endodermal cell tumor
Answer: A: Endodermal cell tumor 
Explanation: Ans-Ai.e. "Endodermal cells a tumour" (Ref. Shaws, 12/e, p. 318, Novaks 13/e, p 1283).Alpha fetoprotein along with alpha-1-antitrypsin is secreted by endodermal cell tumours.These tumours are a second most common tumour of germ cell origin.