As a Seed Germinates, DNA Synthesis Begins

As a seed germinates, DNA synthesis begins

A) when gibberellins are secreted by the embryo.
B) when the embryonic root, or radicle, begins to grow.
C) as imbibition takes place.
D) when the endosperm starts metabolizing starches, proteins, and lipids.
E) when the aleurone layer assembles enzymes, proteases, and ribonucleases.