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
APUD cells are seen in: 
Select and explain. 
A. Bronchial adenoma, B. Bronchial carcinoid, C. Hepatic adenoma, D. Villous adenoma
B: Bronchial carcinoid
Answer: B: Bronchial carcinoid 
Explanation: Bronchial carcinoid