Which one of the following is TRUE regarding bone repair?

A) Fibrocartilage degenerates where the two broken ends of the bone were once together.
B) Osteoblasts convert cartilage to bone in the injured area.
C) Immediately after breaking a bone, a hematoma breaks free from the injured area.
D) Bones heal more quickly as individuals age.
E) The repaired area of a bone is much thinner than the original bone.