Local 542 Represents the Employees at Reddi Tile

Local 542 represents the employees at Reddi Tile.The union wishes to negotiate a collective bargaining agreement over wages,hours,and working conditions at Reddi,but Reddi refuses to even speak to officials of the union.Which of the following is most likely to be true in this case?

A) Reddi is guilty of an unfair labor practice for refusing to bargain over permissive subjects of bargaining.
B) Reddi is not guilty of an unfair labor practice if it can demonstrate that its employees currently enjoy wages, hours, and working conditions substantially similar to what they would have under a collective bargaining agreement.
C) Reddi is guilty of an unfair labor practice for refusing to bargain over mandatory subjects of bargaining.
D) Reddi is not guilty of an unfair labor practice if it enters into an agreement with the National Labor Relations Board (NLRB) stating that it will provide its employees with the same wages, hours, and working conditions sought by the union but without the union's presence.