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The movement of tectonic plates buries a rock deep inside Earth. Intense heat and pressure change the mineral composition of the rock and transform into Rock A. Rock A melts and comes out to the surface of Earth during a volcanic eruption. The molten rock cools rapidly to form Rock B.

Which statement is most likely correct?

Rock B may have fossils.

Rock A may have shiny, glassy surface.

Rock A is composed of layers of sediment.

Rock B has a fine grainy texture and small crystals.