This part of Earth's surface is where water is in solid form, including sea ice, lake ice, river ice, snow cover, glaciers, ice caps and ice sheets, and permafrost. Collectively, this is called the cryosphere. This sphere has a great impact on climate around the globe as it interacts with the __________ and ___________.

A) atmosphere and hydrosphere.
B) hydrosphere and geosphere.
C) geosphere and biosphere.
D) polarsphere and atmosphere.