Refer to the figure.

-The figure shows how biomes vary with temperature and precipitation. If the average temperature on Earth increased, what effect would this have on the distribution of boreal forests in the Northern Hemisphere?

A) Boreal forests would be able to grow further south than their present range.
B) Both northern and southern edges of the boreal forests would move northward.
C) The total global area covered by tundra would increase.
D) The distribution of boreal forests would not change.