Identify Which of the Following Is Not Associated with an Increasing

Identify which of the following is not associated with an increasing concentration of private wealth.

A) Bill Gates was the wealthiest individual in 2010 at about $54 billion, followed by Warren Buffett with $45 billion.
B) The middle class has expanded as members invest heavily in the stock of large corporations.
C) The DuPont family controls ten corporations, each worth billions of dollars, including General Motors, Coca-Cola, and United Brands.
D) The Rockefellers control five of the world's twelve largest oil companies and four of the biggest banks.