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
Which are seen in endodermal sinus tumor: 
Select and explain. 
A. Schiller-duval bodies, B. Reed-Sternberg cells, C. Reinke's crystals, D. Russell bodies
A: Schiller-duval bodies
Answer: A: Schiller-duval bodies 
Explanation: None