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Which of the following statements is TRUE regarding vibrational spectroscopy?
The intensity of the fluorescence emission is restricted to the lowest vibrational level of the first excited electronic state.
The relative intensities of the fluorescence emission from a given energy level to the vibrational levels of the ground electronic state can be predicted using a Boltzmann distribution.
The energy spacing in the fine structure of a fluorescence spectrum represents the vibrational energy spacing of the ground electronic state.
Because the actual potential energy curve for a vibrational mode is anharmonic, the energy level spacing tends to become uniform at greater displacements.