This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamin D, Subject name: Pediatrics
[{'content': 'Most potent form of vitamin D is - \nSelect and explain. \nA. Ergocalciferol (Vit. D2), B. 7 dehydro cholecalciferol, C. 25 hydroxy cholecalciferol, D. 1,25 dihydroxy cholecalciferol', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 1,25 dihydroxy cholecalciferol o 1,25 cholecalciferol also k/a calcitriol is active form of Vit. D.o Cholecalciferol in liver continued to 25 hydroxy cholecalciferol.o in kidney 25-Hydroxvcholecalciferol converted into 1,25-Hydroxy cholecalciferol.", 'role': 'assistant'}]