Communication Workers Union Is Certified as the Bargaining Representative for Workers

Communication Workers Union is certified as the bargaining representative for workers at Gulf Wi-Fi Company.Terms that result from bargaining with Gulf apply to

A) all workers in the bargaining unit.
B) only current workers in the bargaining unit,not new or later hires.
C) only workers in the bargaining unit who agree to the terms.
D) only workers in the bargaining unit who chose to belong to the union.