_Which one of the following statements is NOT correct?$?

• A. Black cotton soil of north-west India was formed by the weathering of basaltic lava rocks
• B. Sedimentary rocks are distinguished from other types of rocks by the presence of distinct layers
• C. Granite has large crystals of quartz, feldspar and mica in it
• D. A metamorphic rock is softer and less compact than its original type