Picketing to Force an Employer to Recognize an Uncertified Union

Multiple Choice

Picketing to force an employer to recognize an uncertified union is an unfair labor practice when

A) the employer has refrained from recognizing another union as the collective bargaining agent of its employees.
B) it has been conducted with an aim to prevent secondary boycotts.
C) a valid representation election has been conducted by the National Labor Relations Board within the past 12 months.
D) it has been conducted for an unreasonable time, in excess of 10 days.
E) it has been conducted with a petition for a representation election being filed with the National Labor Relations Board.