Which statement differentiates endochondral ossification from intramembranous ossification and identifies bones formed by each process?

Which statement differentiates endochondral ossification from intramembranous ossification and identifies bones formed by each process?

• A. Endochondral ossification forms flat bones directly from mesenchyme; intramembranous forms long bones via a cartilage precursor.
• B. Endochondral ossification forms long bones via a cartilage precursor; intramembranous forms flat bones directly from mesenchyme (e.g., skull bones).
• C. Both processes form bones in the same way; there is no difference.
• D. Endochondral ossification occurs only after birth; intramembranous occurs only prenatally.

Answer: (B)