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 not the surgery for GERD 
Select and explain. 
A. Nissens fundoplication, B. Linx, C. Poem, D. None of the above
C: Poem
Answer: C: Poem 
Explanation: Per Oral endoscopic myotomy is done for achalasia cardia