Which of the Following Statements Best Describes the Difference Between

Which of the following statements best describes the difference between an element and a molecule?

A) An element is composed of atoms; a molecule is not.
B) An element is composed of only one kind of atom; molecules can be composed of more than one kind of atom.
C) An element is unstable; molecules are stable.
D) Elements always have lower atomic weights than molecules.
E) Elements exist in nature only as parts of molecules.