The image shows a cross-section of a landscape.

Rolling hills that end at a body of water with points 1 through 4. 1: Slope of the hill furthest inland. 2: Top of the second hill, closer to the water. 3: On the downward slope toward the body of water. 4: Where land meets the body of water.

Which could be the location where water emerges from the surface as a spring?

1
2
3
4