Which of the Following Statements About Bone Formation Is FALSE

Which of the following statements about bone formation is FALSE?

A) Osteoclasts help bones increase in diameter by laying down new bone material on the external surface.
B) Skull bones form directly from osteoblasts, whereas most other bones form first as cartilage.
C) Limb bones develop through the formation of a cartilage model that is later replaced by bone tissue.
D) Bones can continue to increase in length as long as new cartilage is added to the growth plates.
E) More active, younger individuals generally have thicker bones than less active, older individuals.