Why Are Northern Hemisphere Winters Colder Than Northern Hemisphere Summers

Multiple Choice

Why are Northern Hemisphere winters colder than Northern Hemisphere summers?

A) The Earth is closer to the Sun during the summer than it is during the winter.
B) The snow that falls in the northern latitudes cools the Earth during the winter.
C) The light from the Sun shines more directly on the Northern Hemisphere during the summer.
D) The period of sunlight is shorter during the summer than during the winter.