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': "All are true regarding Barrett's oesophagus except \nSelect and explain. \nA. Over production of epidermal growth factor from saliva, B. Decreased esophageal pH, C. Decreased esophageal motility, D. Duodenogastric reflux", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Epidermal growth factor from saliva is found to be protective against the damage of esophageal mucosa due to reflux based on various studies Duodenogastric reflux increases biliary exposure of lower esophagus and it has been found biliary reflux causes more damage than gastric reflux Decreased clearance of esophagus by peristalsis and retention of acidic contents (lowpH) in lower esophagus causes more damage', 'role': 'assistant'}]