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': 'Malignant gastric ulcers are characterized by A/E ? \nSelect and explain. \nA. Malignant gastric ulcers are characterized by A/E ?, B. Mucosal rugae stop far of ulcers, C. Eccentric crater, D. Margins are raised', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Ulcer extends beyond the gastric wallo In malignant ulcers mucosal rugae stop far of the ulcers whereas in benign ulcers mucosal rugae projects outwards from the margins of the ulcer", 'role': 'assistant'}]