A clinical study is performed with subjects who were diagnosed with hyperthyroidism, compared with a control group of subjects who were euthryoid. The pathologic findings in the thyroid glands of these subjects are analyzed to determine the spectrum of disease processes present. Which of the following pathologic processes is most likely to be found with equal frequency in both the study and the control subjects?
选项：

A:Subacute granulomatous thyroiditis
B:Multinodular goiter
C:Medullary carcinoma
D:Hashimoto thyroiditis
E:Follicular adenoma