This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Management of Wounds, Subject name: Surgery
Surgery for elective hemicolectomy for carcinoma colon is described as - 
Select and explain. 
A. Clean, B. Clean contaminated, C. Dirty, D. Contaminated
B: Clean contaminated
Answer: B: Clean contaminated 
Explanation: Ans. is 'b' i.e., Clean contaminated