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 a premalignant condition: September 2011 
Select and explain. 
A. Barrett's esophagus, B. Hiatus hernia, C. Achalasia, D. Plummer Vinson syndrome
B: Hiatus hernia
Answer: B: Hiatus hernia 
Explanation: Ans. B: Hiatus hernia