Which of the Following Statements About Atomic Spectra Is Incorrect

Multiple Choice

Which of the following statements about atomic spectra is incorrect?

A) An atom must absorb energy before it can emit a spectral line
B) Only atoms in the ground state can radiate energy
C) An electron dropping between two specific energy levels always emits the identical spectral line
D) No two elements have identical atomic spectra
E) All of the statements above are correct (choosing this statement indicates that it is correct)