This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroiditis, Subject name: Pathology
[{'content': "A 45 year old female patient presented with features of hypothyroidism. Histopathology is shown below. Based on histological features, what is your diagnosis? \nSelect and explain. \nA. Hashimoto thyroiditis, B. Granulomatous thyroiditis, C. Papillary carcinoma of thyroid, D. Reidel's thyroiditis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Given histopathological slide shows extensive infiltration of thyroid parenchyma by mononuclear inflammatory infiltrate, well-developed germinal centers & Huhle cells. These features along with the history suggests the diagnosis of Hashimoto thyroiditis.', 'role': 'assistant'}]