Which of the Following Statements Is NOT True Regarding the Skeleton

Which of the following statements is NOT true regarding the skeleton of a human fetus at eight weeks of development?

A) The "skeleton" will likely consist of (primarily) cartilage templates, save for the ribs and skull.
B) This skeleton will demonstrate rapid growth, and will quickly increase in size as development proceeds.
C) Although this skeleton will initially be composed of cartilage, it will be transformed to bone as blood vessels develop and associate with it.
D) This skeleton is composed of mineralized bone as soon as it forms; portions of this skeleton (the skull) will become cartilaginous as development proceeds.
E) This early fetal skeleton is composed of the same material as the articular cartilage found in the knee joints of adult humans.