This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Most common primary leading to secondaries in pancreas 
Select and explain. 
A. Lung, B. Breast, C. Colon, D. Stomach
A: Lung
Answer: A: Lung 
Explanation: Metastatic Tumors to pancreas MC site of primary : RCC > Malignant melanoma On autopsy, most common primary : CA Lung Ref: Sabiston 20th edition Pgno : 1544