This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Concepts, Subject name: Pathology
The commonest location for the carcinoid tumor is which of the following? 
Select and explain. 
A. Small intestine, B. Bronchus, C. Appendix, D. Stomach
A: Small intestine
Answer: A: Small intestine 
Explanation: Carcinoid tumor:- Neuroendocrine tumor, most common site being GIT and Lungs being 2nd most common In GIT, most common site is small intestine Composed of cells that contains dense-core neurosecretory granules in their cytoplasm.