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
Primary metabolic bone disorder in scurvy is – 
Select and explain. 
A. Decreased mineralization, B. Decreased osteoid matrix formation, C. Increased bone resorption, D. Decreased bone mass with normal mineralization and osteoid formation
B: Decreased osteoid matrix formation
Answer: B: Decreased osteoid matrix formation 
Explanation: Collagen is a component of osteoid (protein matrix).
Collagen synthesis is deficient in scurvy; therefore, osteoid formation is defective.
On the other hand, in rickets osteoid formation is noinial, but mineralization (Calcification) of osteoid is defective.