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: Orthopaedics
Increased bone density is not seen in 
Select and explain. 
A. Osteopetrosis, B. Rickets, C. Hypervitaminosis A, D. Lead poisoning
B: Rickets
Answer: B: Rickets 
Explanation: None