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: Anatomy
[{'content': "Barrett's oesophagus shows \nSelect and explain. \nA. Intestinal dysplasia, B. Intestinal metaplasia, C. Columnar cell metaplasia, D. Columnar cell dysplasia", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Barrett oesophagus is a complication of chronic GERD that is characterised by intestinal metaplasia within the esophagal squamous mucosa', 'role': 'assistant'}]