Which of the following statement is not correct about sediment load phenomenon and its measurement?

• A. The material is kept in suspension by the turbulence or by the generation of eddies
• B. In laminar flow, the shear stress is caused due to the difference of the velocities at the top and the bottom
• C. In turbulent flow, momentum transfer is not very significant
• D. Due to the formation of eddies, the sediment transfer from high concentration regions to the low concentration regions takes place