Crystallization Occurs When Precipitant Is Added to a Solution,creating a Temporary

Crystallization occurs when precipitant is added to a solution,creating a temporary supersaturated solution.Crystallization occurs in two stages: nucleation and particle growth.Which of the following is NOT true for nucleation and particle growth?
I Nucleation occurs when solutes form clusters of sufficient size which reorganize into a more ordered structure capable of growing into larger particles.
II Particle growth occurs when ions,molecules,or other nuclei condense onto a particle to form a larger crystal.
III Sources of nucleation are solution impurities or small scratches on a glass surface.
IV Particle growth occurs when amorphous particles clump together to create larger amorphous particles.

A) I
B) III and IV
C) IV
D) I,II,and IV
E) II and IV