Which of the Following Statements Is NOT True About the Effects

Which of the following statements is NOT true about the effects of mining sand or gravel from a streambed or banks?

A) There aren't any negative effects; the stream merely brings in more sand and gravel.
B) Removal of sediment makes the stream erode its channel deeper.
C) Increased erosion by the stream can affect roads and bridges.
D) Deepening the channel lowers the water table and affects agriculture.
E) Deepening the channel can affect water supplies.