Which statement correctly describes what atoms and molecules are made of?
A. Molecules are made of atoms, and atoms are made of protons,
neutrons, and electrons.
B. Molecules are made of protons and neutrons, and atoms are
made of electrons and protons.
C. Atoms are made of protons and electrons, and molecules are
made of neutrons and electrons.
D. Atoms are made of molecules, and molecules are made of
protons, neutrons, and electrons.