In the photoelectric effect, an electric current forms when light strikes a metal surface. Which statement explains what causes the current?
A. Electrons are knocked off the surface when light strikes it because
the light acts as particles.
B. Electrons flow from one atom to another because the light acts as
a wave.
C. The light causes electrons to flow in different directions within an
atom because light acts as a wave.
D. Electrons are destroyed when light strikes a surface because the
light acts as particles.