The north-facing side of a hill in a mountainous region in the US tends to __________?
A. Receive less sunlight during a year than the south-facing side
B. Grow a variety of trees that are typically observed at higher elevation
C. Be a better location for a ski run than the south-facing side
D. Have snow on the ground for a longer period of time in winter compared to the south-facing side
E. All of the above