This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Elective cholecystectomy is \nSelect and explain. \nA. Clean contaminated, B. Clean, C. Diy, D. Contaminated', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clean no viscus opened EX: thyroid, breast surgeries Clean-contaminated viscus opened, minimal spillage) Cholecystectomy, Gastric surgery Contaminated open viscus with spillage or inflammatory disease Inflamed appendix, rectal surgeries Diy pus or perforation, or incision through an abscess I&d wound debridement', 'role': 'assistant'}]