Which of the Following Is False About the Effect of Artificial

Which of the following is false about the effect of artificial light on sleep?

A) Blue wavelengths of light such as from TVs and computer screens, interfere with sleep onset.
B) Disruption of circadian rhythms due to artificial light exposure at night is associated with major depression and other mood disorders
C) The light exposure associated with checking a smartphone at night is not enough to disrupt sleep.
D) Ambient light from streetlamps, headlights, and so on causes sleep disruption.