Students placed some sand on one side of a tray and carefully poured water in the remaining portion of the tray. They gently rocked the tray side to side 10 times, to create waves. After this action, some of the sand has moved. Which of the following statements best describes what happened? A. The waves cause hurricanes to form

B. The action of the waves causes sand to pile up higher and higher on the beach

C. The sand has been chemically weathered

D. The waves have eroded the sand and then deposited some of it in the water