Which statement about the kidney and water is correct?

The kidney removes some water from the blood by filtration, after which water is not reabsorbed.

The kidney first removes some water from the blood by reabsorption, and then returns water to the blood by filtration.

The kidney removes water from the blood by reabsorption only; water is not removed by filtration.

The kidney first removes some water from the blood by filtration, and then returns water to the blood by reabsorption.