Why Did Significant Third-Party Factions Emerge While Texas Was Still

Why did significant third-party factions emerge while Texas was still a one-party state?

A) Third parties were able to capitalize on the weakness of the Republican Party and substituted for it.
B) They were the only alternative to the Democratic Party because the Republican Party was banned.
C) They never were an alternative to the Democratic Party but factions of disenfranchised Democrats.
D) They represented the radical fringe of leftist ideology which was not represented in the Democratic Party.
E) Considerable funding came from out-of-state sources to build third parties to challenge the Democrats.