68.有關 Graves 氏病,下列何者正確?(A)為甲狀腺腺瘤(adenoma of the thyroid)(B)為結節性甲狀腺腫(nodular goiter)(C)為自體免疫甲狀腺疾病(autoimmune thyroid disease)(D)為亞急性甲狀腺炎(subacute thyroiditis)