An Action Spectrum Is Different from an Absorption Spectrum in That

An action spectrum is different from an absorption spectrum in that an action spectrum:

A) provides evidence that a particular pigment is responsible for a particular process.
B) provides information about the extent of reflectance.
C) is the light-transmitting pattern of a pigment.
D) is the light-absorbing pattern of a pigment.
E) is the relative effectiveness of different wavelengths for a specific process.