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: Pathology
[{'content': 'Commonest infantile testicular tumour is - \nSelect and explain. \nA. Seminoma, B. Teratoma, C. Yolk sac tumor, D. Dysgerminoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most common tumor of testis\xa0→\xa0Seminoma.\nMost common tumor of testis in childhood\xa0→\xa0yolk sac tumor (endodermal sinus tumor or infantile embryonal carcinoma).', 'role': 'assistant'}]