This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Calcitionin is secreted from - 
Select and explain. 
A. Ancinar cells of thyroid, B. Chief cells of parathyroid, C. C cells of thyroid, D. Oxyphil cells of parathyroids
C: C cells of thyroid
Answer: C: C cells of thyroid 
Explanation: None