From question we can guess it’s in first excited state I believe.
They said emitted wavelength is less than or equal to absorbed. Equal to case is obvious. But if it’s less than, it means more energy in transition. We want total of three wavelengths so it goes to second excited state.
Also, if say it’s at first state and goes to third, then 3 to 2 emission will have higher wavelength. So from the initial level it can rise only one level