Which One of the Following Statements About Sand Dunes Is

Multiple Choice

Which one of the following statements about sand dunes is correct?

A) A dune migrates in the direction of inclination of the slip face.
B) In a sand dune, the more gently inclined strata lie parallel to the slip face.
C) The more gently sloping surface is the leeward slope of the dune.
D) Sand is blown up the slip face and rolls down the more gently sloping flank of the dune.