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: Surgery
what is the diagnosis of following Barium Xray? 
Select and explain. 
A. Achalasia Cornelia, B. ca. esophagus, C. Plummer winson Syndrome., D. GERD
B: ca. esophagus
Answer: B: ca. esophagus 
Explanation: ref : bailey and love 27th ed