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': 'Amongst the following, the most common site for Leiomyoma is - \nSelect and explain. \nA. Stomach, B. Small Intestine, C. Duodenum, D. Colon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common benign neoplasm of the upper gastrointestinal tract is leiomyoma accounting for about 30% of all tumors.\nThe commonest site of leiomyoma in the gastrointestinal tract is the stomach (61.5%) followed by jejunum (19%).\nDuodenal leiomyoma are rare and occur in 5% of cases.', 'role': 'assistant'}]