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': 'Best site for taking biopsy for viral oesophagitis is? \nSelect and explain. \nA. Edge of ulcer, B. Base of ulcer, C. Adjacent indurated area around ulcer, D. Surrounding normal mucosa', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Edge of the ulcer o In viral esophagitis d/t Herpes simplex the biopsy sample is taken from the edge of the ulcer.", 'role': 'assistant'}]