Which of the following statements is true of groundwater hydrology?
a. As more water is drawn from a well, corn of depression is formed near the surface of the well.
b. When water is moved from an aquifer near the sea, the potentiometric surface stays the same height.
c. Water pressue in the aquifer would increase with water injected to a well
d. Salt water is ligher than fresh groundwater, so it can rise faster when a pumping well is constructed near the sea