Which of the Following Is True About How a Stream

Multiple Choice

Which of the following is true about how a stream erodes material?

A) Abrasion is concentrated on the upstream side of obstructions.
B) Turbulence of the water is less important than the temperature,which affects viscosity.
C) Erosion occurs equally on two sides of a bend.
D) Water cannot erode unless it is carrying sediment.
E) All of these are correct.