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': 'Tumor marker related to both colon carcinoma and pancreatic carcinoma: September 2008 \nSelect and explain. \nA. CA-125, B. CA-19-9, C. CD-15-3, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: CA-19-9CEA and CA-19-9 are associated with carcinoma of colon and pancreas. CD-15-3 is associated with breast carcinoma.', 'role': 'assistant'}]