This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
All are manometric features of achalasia except (not related -medicine) 
Select and explain. 
A. High LES pressure, B. Decreased LES relaxation, C. Segmental body peristalsis, D. Manometry helps in diagnosis
C: Segmental body peristalsis
Answer: C: Segmental body peristalsis 
Explanation: Elevated intraesophageal pressure (pressurization of the esophagus) from incomplete air evacuation Simultaneous mirrored contractions with no evidence of progressive peristalsisLow-amplitude waveforms indicating a lack of muscular tone