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
Gastrojejernostomy surgery belongs to 
Select and explain. 
A. Clean surgery, B. Contaminated surgery, C. Clean contaminated surgery, D. Dirty surgery
C: Clean contaminated surgery
Answer: C: Clean contaminated surgery 
Explanation: Clean contaminated surgery :

Wound is exposed to not only skin but also GI tract / Respiratory tract / Urinary tract organism in controlled enviroment.
Hence Gastrojejunostomy surjery belongs to this category.