How Did This Cone of Depression in the Groundwater Form

Multiple Choice

How did this cone of depression in the groundwater form?

A) An artesian spring flowed upward on all sides.
B) The earth's rotation causes groundwater to twirl in a counter-clockwise direction.
C) Groundwater is pumped from the well faster than it can flow to replenish what is lost.
D) Clay horizons cause perched water to flow away from a central point.