52) Which of the following is an example of a union unfair labor practice? A) Ned refuses to reinstate workers when job openings occur because the workers participated in a lawful strike. B) Deion, an operations head, threatens to close down a plant if organized by a union. C) Tuan, a new employee, refuses to join a union. D] Marisol, a nonunion employee, spies on union meetings. E) Abby, a union head, forces an employer to stop doing business with another employer who refused to recognize the union