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
Barrett's oesophagus shows 
Select and explain. 
A. Intestinal dysplasia, B. Intestinal metaplasia, C. Columnar cell metaplasia, D. Columnar cell dysplasia
B: Intestinal metaplasia
Answer: B: Intestinal metaplasia 
Explanation: Barrett oesophagus is a complication of chronic GERD that is characterised by intestinal metaplasia within the esophagal squamous mucosa