The right option is; B. wadi
In the Middle East, a wadi is a dry riverbed that often fills briefly with water after strong rains.
Wadi is a dry river bed or valley of a stream that is usually dry except during the times of heavy rain. Wadi is situated in regions of southwestern Asia and northern Africa. The sediments inside wadi is composed of complete range from gravel to mud along with large range of sedimentary structures.
