A tree can be considered as a kind of pump in the following two ways: ______.
选项：

A:Making the ground far more loosely made up and increasing the humidity of the surrounding land.
B:Sucking up water from the ground and increasing the humidity of the surrounding land.
C:Sucking up water from the ground and keeping the surrounding land drier.
D:Making the ground far more lorry made up and keeping the surrounding land much drier.