This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Carcinoid tumor in the appendix size 3.4 cm. The ideal treatment is: \nSelect and explain. \nA. Right hemicolectomy, B. Radiotherapy, C. Chemotherapy, D. Observation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Right hemicolectomyRef: Sabiston 20th edition, Page 1308* For tumors at base of appendix and for tumors in appendix >2cm. Right hemicolectomy is the treatment of choice.', 'role': 'assistant'}]