By the Mid-1980s, All of the Following Were True of the Rust

By the mid-1980s, all of the following were true of the Rust Belt, EXCEPT:

A) Many companies had left the region seeking lower operating costs.
B) Cities hardest hit by the economic changes were located in northeastern states.
C) The shift from manufacturing to the service sector adversely affected factory workers.
D) Cities hardest hit by the economic changes were located in southern and western states.