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: Surgery
Indicators of bone formation includes all of following except- 
Select and explain. 
A. Osteocalcin, B. Alkaline phosphatase, C. Hydroxyprolin, D. Bone scan
C: Hydroxyprolin
Answer: C: Hydroxyprolin 
Explanation: C i.e. Hydroxyproline Serum & urinary deoxypyridinoline and N - telopeptide & C - telopeptide as well as urinary hydroxyproline are markers of bone resorptionQ (not bone formation)