As the Average Surface Temperature of the Earth Rises, the Northern

As the average surface temperature of the Earth rises, the Northern hemisphere of the Earth is warming more rapidly than the Southern hemisphere because

A) the Northern hemisphere contains more landmass which more readily absorbs solar radiation
B) during summer in the Northern hemisphere, the Earth is closer to the Sun
C) there is less ice in Arctic regions compared to the Antarctic regions so less radiation is reflected out into space
D) there are more clouds in the Southern hemisphere to reflect solar radiation out into space