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
[{'content': 'Regarding CEA-false is - \nSelect and explain. \nA. Prognostic indicator, B. Glycoprotein, C. Elevated in colorectal carcinoma, D. Elevated only when there is hepatic metastasis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Elevated only when there is hepatic metastasis", 'role': 'assistant'}]