11. How does the spectrum of a molecule differ from the spectrum of an atom? (A) A molecule does not have spectral lines due to electrons changing energy levels. (B) A molecule has additional spectral lines due to changes in its rotational and vibrational energies. (C) Molecules only have spectral lines at ultraviolet wavelengths. (D) Most atoms only have spectral lines at infrared wavelengths. (E) An atom has a wider range of spectral lines than molecules.