Which of the Following Is True of the Biosphere

Multiple Choice

Which of the following is true of the biosphere?

A) it is never referred to as the ecosphere.
B) it exists on other planets in the solar system.
C) it is not connected to the overlapping inorganic spheres.
D) it extends from the floor of the oceans to 8 km into the atmosphere.
E) it is also known as the cryosphere.