Two processes are described below:

Process A: Rapid moving water strikes a rock on the bottom of a stream and breaks it into pieces
Process B: Glaciers moving along a rocky surface form cracks in the rocks

Which statement is true about the processes?
A. Both represent physical weathering.
B. Both represent chemical weathering.
C. Process A is physical weathering and Process B is chemical weathering.
D. Process A is chemical weathering and Process B is physical weathering.