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
Which of the following is false about lower esophageal sphincter 
Select and explain. 
A. Relaxation is mediated by VIP and nitrous oxide, B. Resting pressure is 10 to 25 mmHg, C. Pinch cock action of diaphragm protects against reflex, D. Abnormal relaxation will cause achalasia
D: Abnormal relaxation will cause achalasia
Answer: D: Abnormal relaxation will cause achalasia 
Explanation: Relaxation will cause GERD
Failure to relax will cause achalasia