Which letter in the diagram corresponds to an aquifer bound by beds of rock and confined under pressure?

Aquifer

A subsurface layer of permeable rock, fractures, or unconsolidated matter that holds water, allowing for groundwater to be drawn out through a well.

Rock Beds

Geological formations consisting of solidified layers of mineral and rock material, often serving as a natural foundation or resource for extraction.

Confined

Being restricted within boundaries or limited in space or freedom, often referring to a physical or metaphorical constraint.