Which Statement Is NOT True of "Vertical Integration

Which statement is NOT true of "vertical integration"?

A) A "fully integrated company" was one that controlled sources of raw materials, means of production, distribution systems, and sales outlets.
B) In an industry oriented toward consumer goods, vertical integration tended to reach "upward" toward consumers.
C) In heavy industries oriented toward supplying other industries, vertical integration tended to reach "downward" toward raw material suppliers.
D) The salt pool is a classic example of vertical integration.