The Mathematical Equation Deduced by Johann Balmer and Subsequently Rewritten

The mathematical equation deduced by Johann Balmer and subsequently rewritten in another form by Johannes Rydberg gives us:

A) the relationship between wavelengths of spectral lines and the electrons' energies responsible for them
B) the relationship between wavelength and frequency of spectral lines
C) the relationship between frequencies of spectral lines and the energy values associated with them
D) a model for finding the limited numbers of wavelengths associated with atomic spectral lines
E) an explanation for the continuous range of energy values associated with atomic spectra