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
[{'content': 'Best procedure in mid rectal Carcinoma is - \nSelect and explain. \nA. Abdomino perineal resection, B. Anterior resection, C. Perineal loop, D. Transverse Colostomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]