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: Surgery
Placental alkaline phosphatase is marker of ? 
Select and explain. 
A. Theca cell tumour, B. Teratoma, C. Choriocarcinoma, D. Seminoma
D: Seminoma
Answer: D: Seminoma 
Explanation: Answer is 'd' i.e. Seminoma Placental alkaline phosphatase is a marker of seminoma. Also know Gamma-glutamyl-transpeptidase is marker of --> seminoma testis AFP is not produced by --> seminomas and Choriocarcinomas