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': 'Which one of the following is not used as a Tumor Marker in Testicular tumors: \nSelect and explain. \nA. AFP, B. LDH, C. HCG, D. CEA', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CEA', 'role': 'assistant'}]