Amino Acids Linked Together Fold into Shapes That Are Most

Amino acids linked together fold into shapes that are most chemically stable, so the proteins they make up have particular shapes. Why does this matter?

A) It actually doesn't matter because the body can fix its own proteins, so they can do their job.
B) If the proteins aren't the right shape, DNA can't translate them.
C) If the proteins aren't the right shape, they don't fit down blood vessels.
D) It actually doesn't matter because DNA will set up the proteins correctly regardless of the amino acids.
E) If the proteins aren't the right shape, they can't do their job properly.