This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
Osteoclasts are inhibited by 
Select and explain. 
A. Parathyroid hormone, B. Calcitonin, C. 1,25-dihydroxycholecalciferol, D. Tumor necrosis factor
B: Calcitonin
Answer: B: Calcitonin 
Explanation: Osteoclasts are Bone cells that break down and remove bone tissue.Calcitonin- a polypeptide hormone secreted by the parafollicular or C cells of the thyroid gland; it is involved in plasma calcium homeostasis and acts to decrease the rate of bone resorption.Ref: Ganong&;s review of medical physiology; 24th edition; page no:-387