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
All are resected in whipples operation except - 
Select and explain. 
A. Duodenum, B. Head of pancreas, C. Portal vein, D. Common bile duct
C: Portal vein
Answer: C: Portal vein 
Explanation: Whipples operation (Pancreaticoduodenectomy)

is the most commonly performed operation for carcinoma of head of pancreas.

It includes resection of: 

distal stomach                 
gall bladder
duodenum 
proximal jejunum  
CBD       
regional lymphatics                                              
head of pancreas
Restoration of gastrointestinal continuity requires
pancreaticojejunostomy
choledochojejunostomy &
gastrojejunostomy