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
Most common tumour of pancreas is - 
Select and explain. 
A. Adeno-carcinoma, B. Squamous cell carcinoma, C. Adeno-squamous cell carcinoma, D. Duct cell adeno carcinoma
D: Duct cell adeno carcinoma
Answer: D: Duct cell adeno carcinoma 
Explanation: Ans. is 'd' i.e., Duct cell adenocarcinoma