Use the subordinating conjunction “which” to combine the following sentences.

Ninety-five percent of the surface of Antarctica is covered by ice. Antarctica contains 70 percent of Earth’s freshwater supply.

Ninety-five percent of the surface of Antarctica is covered by ice. Which contains 70 percent of Earth’s freshwater supply.
Which ninety-five percent of the surface of Antarctica is covered by ice contains 70 percent of Earth’s freshwater supply.
Ninety-five percent of the surface of Antarctica; which contains 70 percent of Earth’s freshwater supply, is covered by ice.
Ninety-five percent of the surface of Antarctica, which contains 70 percent of Earth’s freshwater supply, is covered by ice.