What does dependency theory say about global inequality in a historical perspective?

What does dependency theory say about global inequality in a historical perspective?
A)   The inequality gap has steadily narrowed during the capitalist era.
B)   The Industrial Revolution has brought technological forces that will someday equalize all the people of the world.
C)   Before the Industrial Revolution, most of the people living in poor societies were better off economically than they are today.
D)   The development of rich societies leads to the improvement of poor societies.
E)   The overthrow of socialist regimes will lead to less dependency on the state.