Earth's Sky Is Blue Because

Earth's sky is blue because:

A) blue light from the sun is more readily scattered by molecules in the atmosphere than red light
B) of reflected light from the oceans
C) red light from the sun is more readily scattered by molecules in the atmosphere than blue light
D) molecules that make up the Earth's atmosphere radiate preferentially at blue wavelengths
E) the Sun radiates more blue light than other wavelengths