Context: Dolerite forms from melted rock. It can form when melted rock cools close to the earth's surface. It is made of minerals such as feldspar and pyroxene.
Dolerite is usually found in dikes. In geology, a dike is a gap in an old rock where a new rock can form. Sometimes, melted rock from below the earth's surface can leak into dikes. When the melted rock becomes solid, it can form dolerite.
What type of rock is dolerite?
A. igneous
B. metamorphic
C. sedimentary
From the given choices, choose the correct answer and respond with the letter of that choice.

A