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
In achalasia cardia, true is - 
Select and explain. 
A. Pressure at distal end increased with no peristalsis, B. Low pressure at LES with no peristalsis, C. Pressure > 50 mm Hg with peristalsis, D. Pressure at the distal end increased with normal relaxation
A: Pressure at distal end increased with no peristalsis
Answer: A: Pressure at distal end increased with no peristalsis 
Explanation: The pressure is elevated at LES with incomplete relaxation on deglutition. The normal pressure of LES is 13.8 ±4.6 of Hg. In Achlasia it increases to twice normal.

Also know

Hypertensive Lower esophageal sphincter

is another motor disorder distinct from Achalsia
here the LES pressure is elevated but it relaxes normally. Peristalsis in the esophageal body is also normal.