What would be the ideal value of the work function of material used to make a sensor of visible light? Pick the best answer for a sensor that would detect all of the visible spectrum. Can select multiple if needed.

A work function lower than the energy of 200 nm photons

A work function lower than the energy of 400 nm photons

A work function lower than the energy of 500 nm photons

A work function lower than the energy of 750 nm photons