A student drops a rock in a pond and notices that her reflection in the water becomes less clear. Which statement best explains the student's observation? (1 point) A. The surface of the water is no longer hard after the rock is dropped in the pond. B. The water is not able to reflect waves after the rock is dropped in the pond. C. The water is not a smooth surface after the rock is dropped in the pond. D. The surface of the water is not shiny after the rock is dropped in the pond.