The correct option is A
A-2, B-3, C-1
Explanation:
Marble is an example of Metamorphic rock, Pegmatite is an example of Igneous rock and Halite is an example of Sedimentary rock.
Extra Information: Other Examples of Igneous rocks – granite, gabbro, basalt, volcanic breccia and tuff. Sandstones, limestone, shale, loess, potash etc are sedimentary rocks. Gneissoid, syenite, granite, slate, schist are examples of metamorphic rocks.