Hydroxyapatite, the primary mineral of bone, is composed mainly of which two elements?

Potassium and sulfur, because organosulfur compounds stabilize collagen and prevent mineralization defects

Sodium and chloride with small amounts of magnesium and iron that substitute into the crystal lattice leading to increased bone brittleness in deficiency states

Carbon and nitrogen in the form of carbonate substitutions and protein-bound complexes that dominate mineral phase chemistry in adult bones

Calcium and phosphorus