In Corporate Communications with Its Employees Regarding the Possibility of Workers

In corporate communications with its employees regarding the possibility of workers bringing in a union, the Taft-Hartley Act prohibits which of the following?

A) Telling employees that union dues will be high
B) Describing current working conditions without unions as ideal
C) Arguing that the proposed union has a long history of strikes
D) Promising early vacations to workers not affiliated with the union
E) All of the above