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
Tumor marker related to both colon carcinoma and pancreatic carcinoma: September 2008 
Select and explain. 
A. CA-125, B. CA-19-9, C. CD-15-3, D. All of the above
B: CA-19-9
Answer: B: CA-19-9 
Explanation: 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.