The Steelworkers Local Represents the Employees at Cochran Tile Mfg

The Steelworkers Local represents the employees at Cochran Tile Mfg. The union wishes to negotiate a collective bargaining agreement over the wages, hours, and working conditions at Cochran, but Cochran refuses to even speak to officials of the union:

A) Cochran is guilty of an unfair labor practice, for refusing to bargain over permissive subjects of bargaining.
B) Cochran 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) Cochran is guilty of an unfair labor practice, for refusing to bargain over mandatory subjects of bargaining.
D) Cochran is not guilty of an unfair labor practice, if it enters into an agreement with the 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.