This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'All of the following about gastrointestinal carcinoid tumours are true, Except \nSelect and explain. \nA. Small intestine and appendix account for almost 60% of all gastrointestinal carcinoid, B. Rectum is spared, C. 5 year survival for carcinoid tumors is > 60%, D. Appendical carcinoids are more common in females than males', 'role': 'user'}, {'content': 'Answer: B \nExplanation: About 15% rectum is involved in a carcinoid tumour it arises from the submucosa with the overlying intact mucous membrane. Reference SRB 5 the edition page no. 877', 'role': 'assistant'}]