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
Major mineral of the bone is - 
Select and explain. 
A. Calcite, B. Hydroxyapatite, C. Calcium oxide, D. Calcium carbonate
B: Hydroxyapatite
Answer: B: Hydroxyapatite 
Explanation: Inorganic component of bone is consists of mineral phase which is principally composed of calcium and phosphate, mostly in the form of hydroxyapatite .