You Are Looking at Sonograms and Are Observing Fetal Bones

Multiple Choice

You are looking at sonograms and are observing fetal bones.Compared to a much earlier sonogram,you can see that this stage of development shows

A) calcified cartilage in the long bones.
B) cartilage in the long bones.
C) compact bone in the long bones.
D) spongy bone in the long bones.
E) None of the answer choices are correct.