Relative Deprivation Theory Is Best Expressed in Which of the Following

Relative deprivation theory is best expressed in which of the following statements?

A) Feelings of deprivation in comparison to others give rise to revolutionary social movements.
B) New patterns of stratification emerging after the Russian Revolution were an unforeseen result of widespread deprivation under the czar.
C) Stability and equilibrium in social processes are conducive to widespread deprivation.
D) The pervasive presence of poverty is in and of itself a leading cause of revolutionary social movements.