Find the truth.
A. Because there are twelve pairs of ribs, there are twelve pairs of intercostal spaces.
B. Most bones begin their development with intracartilaginous ossification and then add intramembranous ossification, as well.
C. Some bones develop entirely by intracartilaginous ossification.
D. Some bones are fully developed by the time of birth.
E. There are three main kinds of ribs: true ribs, false ribs, and floating ribs.
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