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': 'Vit–D deficiency Rickets is Characterised by –a) ↑ed forehead sweatingb) Characteristically ↓ed Ca2+c) Anterior fontanel widenedd) ↑ed alk. phosphatase \nSelect and explain. \nA. ab, B. bc, C. cd, D. ac', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]