Which of the following statements about igneous rocks is correct?
AIntrusive igneous rocks are formed when magma is cooled above the ground.
BExtrusive igneous rocks are formed when magma is cooled below the ground.
CBoth intrusive and extrusive igneous rocks are formed below the ground.
AIntrusive igneous rocks are formed when magma is cooled above the ground.
BExtrusive igneous rocks are formed when magma is cooled below the ground.
CBoth intrusive and extrusive igneous rocks are formed below the ground.