The correct options are
A Sand
B Clay
C Silt
Rivers coming down from mountains bring sediments like silt, sand, clay, and gravel along with them. These are called alluvial deposits. The lowlands of the river valleys get flooded during the rainy season. As the river recedes, some areas are left with new alluvial deposits every year. This region of new alluvial deposits is called the Khadar Region.