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: Physiology
Which of these can cause hypocalcemia: 
Select and explain. 
A. Thyroxine, B. Calcitonin, C. Calcitonin, D. Choloecalciferol
B: Calcitonin
Answer: B: Calcitonin 
Explanation: B i.e. CalcitoninCalcitonin, a hormone secreted by parafollicular cells or C cellQ of thyroid gland, lowers the serum calcium levelQ. Effect of Hormone on Calcium & Phosphate LevelHormoneSerum CalciumSerum phosphateVit DIncreasesQIncreaseQPTHIncreasesQDecreaseQCalcitoninDecreasesQDecreaseQ