Which of the following energy diagrams represents the electronic state of butadiene after absorption of radiation?

Question

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In diagram 2, the energy levels of butadiene are shown before (dashed lines) and after (solid lines) absorption of radiation. The absorbed energy promotes an electron from the HOMO to the LUMO, resulting in a higher energy excited state. Diagrams 1 and 3 show only ground state and intermediate states, respectively, while diagram 4 depicts a different molecule altogether.

Which of the Following Energy Diagrams Represents the Electronic State