According to Document B, which piece of evidence supports the claim, "One of the main goals of the Soviet Union was rapid industrialization."?

A. The Soviet Union was number one or two in the world in production of steel, aluminum, gold, and oil.

B. There were 346 physicians per 100,000 people.

C. The literacy rate increased from 25% in 1915 to 99% in 1980.

D. The Soviet Union produced 114 million fewer passenger cars than the United States in 1980.