This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Thick mucous coat is - \nSelect and explain. \nA. Protective in ulcer patients, B. Not protective in ulcer patients, C. Easily destroyed by antacids, D. Commonly associated with carcinomatous change', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Protective in ulcer patientsSurface mucus layer acts as a defensive force and protects against peptic ulceration.Defensive forces include : Damaging forces include :I. Surface mucus 1. Gastric acidity Bicarbonate secretion into mucusMucosal blood flowApical surface membrane transpoEpithelial regereration capacityElaboration of prostaglandinsPeptic enzymesH. Pylori infectionNSAIDS, Aspirin, Cigarette, alcoholDuodenogastric refluxIshaemiaShockDelayed gastric emptying", 'role': 'assistant'}]