How does the inorganic portion of soil form?

A.
Sand and silt get deposited by rivers and streams.

B.
Rocks get weathered by chemical and physical means to form soils.

C.
Soils get formed by melting and cooling processes.

D.
Heat and pressure change rocks into soils.

Question

How does the inorganic portion of soil form?
 
 A.
Sand and silt get deposited by rivers and streams.
 
 B.
Rocks get weathered by chemical and physical means to form soils.
 
 C.
Soils get formed by melting and cooling processes.
 
 D.
Heat and pressure change rocks into soils.

e.mccormick · Answer

Ask in geography, not solciology.  But you can tag me on this there.