The Year 1886 Marked the High Point of the Popularity

The year 1886 marked the high point of the popularity of the Knights of Labor; however, it soon began to wane. Why did the Knights of Labor lose force after that year?

A) New, similar political parties emerged and started to compete for constituents.
B) Its leader was Henry George, and he was involved in a case of corruption.
C) The Whig Party experienced a major resurgence.
D) The press and employers started to associate it with violence and radicalism.
E) It began to promote public and private police forces against strikes.