Please help me will give brainlist

A sedimentary rock unit was exposed to heat and pressure deep within Earth. The rock changed to metamorphic rock. Over a long time, it was exposed at Earth's surface. How did this metamorphic rock unit reach Earth's surface?
Group of answer choices

A) Magma brought it up to Earth's surface, where it flowed from a volcanic vent as lava.
B) Weathering and erosion of the rock above it caused the metamorphic rock to uplift and become exposed.
C) Weathering of the metamorphic rock brought pieces up to Earth's surface.
D) Deposition acted on the rock unit, causing it to be exposed at the surface over time.