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
The thick mucous coat is - 
Select and explain. 
A. Protective in ulcer patients, B. Not protective in ulcer patients, C. Easily destroyed by antacids, D. Commonly associated with carcinomatous change
A: Protective in ulcer patients
Answer: A: Protective in ulcer patients 
Explanation: Surface mucus layer acts as a defensive force and protects against peptic ulceration.