All are resected in whipples operation except -: (A) Duodenum, (B) Head of pancreas, (C) Portal vein, (D) Common bile duct
Answer is C. 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