Where would you be more likely to find red marrow and why?

• A. The nutrient foramen, red marrow produces blood cells, and the nutrient foramen contains blood vessels.
• B. The endosteum, red marrow produces blood cells, and the endosteum contains progenitor bone cells.
• C. The epiphysis, red marrow is found in spongy bone, and spongy bone is found in the epiphysis.
• D. The diaphysis, the medullary cavity of the diaphysis is filled with marrow.