The Most Important Early Achievement of the American Federation of Labor

The most important early achievement of the American Federation of Labor (AFL) in 1890 was:

A) the union's public recognition as America's first effective union.
B) the union's entering the political arena and becoming recognized nationally.
C) Gompers's own cigar makers' union establishing the eight-hour workday.
D) the union's reaching a total membership of approximately 10,000.
E) Gompers' leading of the members in protest to overthrow the capitalist system.