This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Tumor, Subject name: Pathology
All of the thyroid tumor arises from follicular epithelial cell except: 
Select and explain. 
A. Papillary carcinoma, B. Follicular carcinoma, C. Medullary carcinoma, D. Anaplastic carcinoma
C: Medullary carcinoma
Answer: C: Medullary carcinoma 
Explanation: - Medullary Cancer arises from parafollicular cells or 'C' cells of thyroid associated with secretion of calcitonin. - Remaining all variants ; papillary, follicular, anaplastic thyroid cancers arise from follicular epithelial cells of thyroid