Over the Past Six Decades, a Close, Positive Relationship Is

Over the past six decades, a close, positive relationship is evident between what two phenomena?

A) The number of firms listed on the TSX and economic equality
B) Concentration of income and concentration of corporate capital
C) Concentration of corporate capital and concentration of political power
D) Concentration of income and concentration of political power
E) The growth of the welfare state and concentration of income