How Was the Knights of Labor Unique as a Labor

How was the Knights of Labor unique as a labor group?

A) It formed a successful political party that greatly influenced the topics and outcomes during the campaigns of Gilded Age presidential elections.
B) It celebrated the current version of the wage system and capitalism in general, believing they were beneficial to laborers so long as they could get health insurance through unions.
C) It organized members strictly by their particular trade, allowed only men to join, and sought to ensure that men would continue to receive higher pay than women.
D) It grew rapidly, even as trade unions collapsed during the depression of the 1870s, and continued advocating the revolutionary overthrow of capitalism.
E) It encouraged doctors, lawyers, and bankers to join its ranks because the elite nature of its membership would make positive legislation more likely to be passed.