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: Surgery
Commonest benigm tumour of the eosophagus? 
Select and explain. 
A. Leiomyoma, B. Papilloma, C. Adenoma, D. Hemangioma
A: Leiomyoma
Answer: A: Leiomyoma 
Explanation: Ans. is 'a' i.e. Leiomyoma