Unemployment Is an On-Going Social Problem in Many Parts of the U.S

Unemployment is an on-going social problem in many parts of the U.S. Which of the following would NOT be a factor of unemployment?

A) Our economy follows cycles of growth and decline
B) Structural and fractional factors will cause higher unemployment disparities in some regions
C) The welfare system in the US incentivizes people to not work
D) Inflation generally increases and unemployment declines,