Much Has Been Written Concerning So-Called Right-To-Work Laws

Much has been written concerning so-called right-to-work laws.What is the current status of such laws?

A) Congress has passed a law prohibiting states from passing right-to-work laws.
B) If a state passes a right-to-work law,then individual employees can be forced to join a union.
C) If a state passes a right-to-work law,then individual employees cannot be forced to join a union.
D) If a state passes a right-to-work law,then state and local government employees can unionize.
E) Most states have passed right-to-work laws.