Why Are the Ural Mountains Important to Russia's Manufacturing Centers

Why are the Ural Mountains important to Russia's manufacturing centers?

A) They are an important source of water needed for manufacturing.
B) They are near major cities where the primary markets for Russia's goods are located.
C) They have the largest deposits of industrial minerals in Russia.
D) They have many fast-moving rivers, which provide hydropower for Russia's factories.
E) They are the key source of uranium that fuels the nuclear power plants that power Russia's factories.