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: Medicine
[{'content': 'Which is used in drug induced ulcers-a) Antacidsb) Ranifidinec) Omeprazoled) Misopristol \nSelect and explain. \nA. a, B. c, C. bc, D. ad', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]