The Wavelength of Light Emitted from a Distance Object Is

The wavelength of light emitted from a distance object is related to___________ .

A) gravity-gravity bends electromagnetic waves causing refraction and sorting of wavelengths
B) the energy of the source. A more energetic source has higher wavelength emissions
C) the energy of the source. A more energetic source has lower wavelength emissions
D) distance of the source-the farther away the object is, the lower the wavelength observed related to changes in electromagnetic energy over time