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: Pathology
[{'content': 'Following is true about bronchial carcinoids. \nSelect and explain. \nA. Highly radiosensitive, B. Metastasis common, C. Carcinoid syndrome does not manifest, D. Commonly arise from terminal bronchioles', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Carcinoid syndrome is associated with 10% of bronchial carcinoids only.\nMost bronchial carcinoids.\n\t\nDo not have secretory activity.\nDo not metastasize to distant.\nFollow a relatively benign course.', 'role': 'assistant'}]