This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
[{'content': "All of the following conditions are associated with hyperthyroidism, except: \nSelect and explain. \nA. Hashimoto's thyroiditis, B. Grave's disease, C. Toxic multinodular goiter, D. Struma ovary", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) Hashiinoto's thyroiditisRef: Harrison 18th edition Page 1922* Thyroiditis will predominantly produce hypothyroidism.* De quervains is the only thyroiditis which will have early hyperthyroidism", 'role': 'assistant'}]