This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
[{'content': 'The most common site of esophageal adenocarcinoma is? \nSelect and explain. \nA. Middle 1/3rd, B. Upper 1/3rd, C. Lower 1/3rd, D. Lower end of esophagus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Oesophageal adenocarcinoma usually occurs in the distal one-third of the oesophagus In contrast, half of squamous cell carcinomas occur in middle third of esophagus. Ref: TEXTBOOK OF ROBBINS BASIC PATHOLOGY NINTH EDITION PAGE.562 IMAGE Ref: TEXTBOOK OF HARSH MOHAN 6TH EDITION Fig.20.4 pg :541', 'role': 'assistant'}]