Which statement best describes the formation of metamorphic rocks?
A
Magma cools and crystallizes slowly beneath Earth’s surface.B
Liquid lava erupts from a volcano and cools quickly at Earth’s surface.C
Sand and gravel are deposited at the mouth of a river and, over time, form layers that solidify into rock.D
Ancient sandstone beaches become buried deep beneath Earth’s surface, where they are exposed to extreme heat and pressure.