How do plants and animals differ in how they take in nutrients?

A) Plants take in simple chemicals, which they synthesize into larger molecules; animals take up larger, more complex molecules.
B) Plants need to take in nitrogen-containing molecules, but animals do not.
C) Plants take in complex molecules; animals take up relatively simple chemicals and synthesize larger molecules.
D) Plants must absorb all 20 amino acids, whereas animals are able to synthesize all amino acids.