Which Statement Best Reflects the Progress of U

Which statement best reflects the progress of U.S.labor unions over the last seventy years?

A) They have experienced steady growth and now represent 35 percent of workers.
B) After being painted as "socialist," they saw their enrollment suffer badly through the 1940s, 1950s, and 1960s, but they have rebounded strongly in the last thirty years.
C) Enrollment seems to rise and fall each decade, but labor unions have overall peaked since the turn of the twenty-first century.
D) They have benefited greatly from the steady influx of manufacturing away from other countries.
E) They grew steadily following World War II, peaked in the 1950s when about a third of Americans belonged to a union, then have watched their numbers dwindle as more manufacturing jobs move overseas.