Which of the Following Statements About the Bed Load of a Windstream

Multiple Choice

Which of the following statements about the bed load of a windstream is NOT true?

A) The air immediately above the bed load of a desert sandstorm is usually clear.
B) Desert sandstorms consist of bed load material generally carried at a height of 1 to 2 meters.
C) A bed load moves only by saltation; none of it is carried in suspension.
D) Bed load achieves a greater height when moving above soft, loose sand than above a hard, compacted surface.