Which of the Following Is True Regarding Locations at High

Which of the following is true regarding locations at high elevations?

A) higher elevations experience higher temperatures during the day because they are closer to the Sun.
B) higher elevations experience lower average temperatures during both day and night.
C) the density of air increases with increasing elevation.
D) temperatures at night,and in the shadows,are greater at higher elevations.
E) temperatures are not affected by elevation.