3) What is the difference between absorption and emission spectrum? A) An absorption spectrum is produced when atom release its excess amount of energy, while emission spectrum is produced when atom excited by EM radiation. B) An absorption spectrum is obtained by transmitting EM radiation through a substance. while an emission spectrum is spectrum of EM radiation that given off by a substance. C) An absorption spectrum is produced when atom excited by thermal energy source, while an emission spectrum is obtained when atom is stimulated by chemical energy. D) An absorption spectrum is obtained when excess energy of atom/molecule released as a thermal energy, whereas an emission spectrum is obtained when excess energy of atom/molecul released as a photon.