Which of the following statements BEST describes the concept behind labor unions?
A.
They are aimed at discovering attitudes, beliefs, and opinions of large numbers of people.
B.
They are based on the idea that workers as a group have more influence on management than do individual workers acting alone.
C.
They serve the interests of management, helping establish controls on workers and limit the power of groups of workers.
D.
They establish controls on the banking industry and insure deposits of up to $250,000.