This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Alkaline phosphatase is a tumor marker of which tumor- 
Select and explain. 
A. Seminoma, B. Embryonal carcinoma, C. Yolk sac tumor, D. Embryonal sinus tumor
A: Seminoma
Answer: A: Seminoma 
Explanation: Seminoma-a germ cell of testes. Blood test reveals the presence of placental alp. It is a tumour marker in seminoma and ovarian cancers. It&;s level increases as the tumour burden increases.