This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
[{'content': 'Which of the following is not a sign of active rickets? \nSelect and explain. \nA. Prominent fontanelle, B. Hot cross bun sign, C. Saddle nose, D. Caries teeth', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Symptoms of rickets include: pain or tenderness in the bones of the arms, legs, pelvis, or spine. stunted growth and sho stature. bone fractures. muscle cramps. teeth deformities, such as: delayed tooth formation. holes in the enamel. skeletal deformities, including: an oddly shaped skull. bowlegs, or legs that bow out. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]