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 one of the following is an impoant tumour marker in the diagnosis of endodermal sinus tumour : Which one of the following is an impoant tumour marker in the diagnosis of endodermal sinus tu? mour : 
Select and explain. 
A. HCG, B. CA - 125, C. LDH, D. Alpha foeto protein
D: Alpha foeto protein
Answer: D: Alpha foeto protein 
Explanation: Alpha foeto protein