Q.28. The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g. line number 5 arises from the transition from level B to A). Which of the following spectral lines will also occur in the absorption spectrum?

(1) 4, 5, 6
(2) 1, 2, 3, 4, 5, 6
(3) 1, 2, 3
(4) 1, 4, 6