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: Pediatrics
[{'content': 'True about serology of rickets is – \nSelect and explain. \nA. a, B. b, C. c, D. d', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Rickets is a metabolic disorder of growing bone (immature skeleton) primarily caused by lack of -\n\ni)\xa0\xa0\xa0 Vitamin D or\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 ii) Calcium or\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 iii)\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Phosphate\n\nThe end result is defective mineralization of bone.\nDepending on the cause - Rickets is classified into following types -\n\nClinical variants of Rickets', 'role': 'assistant'}]