The Dominant Rock Type Found on the Lunar Maria

The dominant rock type found on the lunar maria:

A) solidified quickly on the surface of the Moon, as shown by gas bubbles frozen into the rock.
B) is metamorphic rock created from igneous rock by the intense heat and pressure of impacts by meteoroids.
C) is made up of volcanic ash thrown out by lunar eruptions and compressed into rock by later deposits of ash.
D) solidified slowly in the interior of the Moon, as shown by large crystals in the rock.