Which of the Following Is an Example of an Employer

Which of the following is an example of an employer unfair labor practice?

A) Kate, the union head, expels members for crossing a picket line that is unlawful.
B) Jake, a manager, threatens to close down a plant if organized by a union.
C) Rick, a manager, who prohibits mass picketing, when nonstriking employees are physically barred from entering the plant.
D) Ben, a union member, causes discharge of an employee, Jane, who spoke out against a contract proposed by the union.
E) Gail, an employee representative, who tricks his employer by including illegal provisions in a contract.