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
Most common benign tumor of esophagus is - 
Select and explain. 
A. Lipoma, B. Leiomyoma, C. Hamaoma, D. Hemengioma
B: Leiomyoma
Answer: B: Leiomyoma 
Explanation: . Leiomyoma