Which of the Following Statements Concerning Mineral Crystal Formation Is

Which of the following statements concerning mineral crystal formation is NOT true?

A) The physical space available in which a crystal grows is a limiting factor in the shape of a crystal.
B) Given two elements of equal abundance, the element that contributes more readily to mineral formation is the one that "fits" better on an atomic level.
C) Because the identity of the available atoms remains constant, the formation of crystals is independent of the rate of cooling of the molten rock from which it forms.
D) Atoms of a similar size can often replace one another within a crystal structure without changing the identity of the crystal.