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: Surgery
[{'content': 'Which of the following factors contribute to the development of duodenal ulcers -a) Lysolecithinb) Gastric acidc) Alcohol abused) Prostaglandinse) Smoking \nSelect and explain. \nA. bce, B. bc, C. acd, D. ace', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]