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: Microbiology
[{'content': "False about Barrett's oesophagus is \nSelect and explain. \nA. In sho - segment Barrett's there is less than 3 cm of columnar epithelium, B. Barrett's ulcer occurs just above the squamocolumnar junction, C. If a peptic stricture occurs in Barrett's oesophagus it always occurs at the new squamocolumnar junction, D. It is a premalignant condition", 'role': 'user'}, {'content': "Answer: B \nExplanation: Barrett's ulcer is an ulcer in the columnar-lined poion of Barrett's oesophagus.These are distinct from the more usual erosions of reflux oesophagitis that always occur at or just above the squamocolumnar junction.", 'role': 'assistant'}]