This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
Distance of the Lower Esophageal Sphincter from the upper incisors is 
Select and explain. 
A. 15cm, B. 22.5cm, C. 27.5cm, D. 37.5cm
D: 37.5cm
Answer: D: 37.5cm 
Explanation: Lower oesophageal sphincter is seen in lower pa of oesophagus where it pierces diaphram. It is 37.5cm/15inch from incisor teeth. Ref - BDC vol 1 6th edition pg 282