Which Statement Best Exemplifies the Reasons Why Upward Mobility May

Which statement best exemplifies the reasons why upward mobility may be highly difficult for people living in poverty?

A) The cost of primary education is beyond reach for many families, limiting employment opportunities.
B) Individual failings account for most poverty situations, and come from a myriad of personal factors.
C) The burden of living in high-crime areas, combined with high unemployment and poor educational opportunities is very difficult to overcome.
D) Many people living in poverty suffer from mental illness and so gainful employment is hard to maintain.