Over the Course of the 1920s, What Was the State

Over the course of the 1920s, what was the state of labor unions?

A) Labor unions won a number of important victories in the Supreme Court that ensured they would remain a major force throughout the Great Depression.
B) Labor union membership drastically increased, as closed shop policies became the new norm and the Harding administration increased ties with unions.
C) Amid soaring industrial production levels, decreasing unemployment, and anti-union efforts by business owners, labor union membership significantly decreased.
D) Although labor union membership remained stagnant, members greatly benefited from the prosperity of the decade and the drastic rise in the standard of living.
E) Although Democratic presidents had sought to end labor unions, the labor unions of the 1920s enjoyed the support of Republican presidents.