Refer to the Figure of Growing Bone

Refer to the figure of growing bone. Which statement the bone shown is true?

A) If structure B is damaged, the bone may end up being shorter than normal.
B) The cells in structure A are primarily osteocytes.
C) The spaces in the region marked C will become filled in by Haversian systems when the bone has finished growing.
D) The type of bone labeled D lacks a blood supply.
E) The space labeled E will become filled in by spongy bone when the bone has finished growing.