Which of the Following Is True About the Structure of Labor

Which of the following is true about the structure of labor movements?

A) British unions organize into nationals,but locals retain a good deal of authority.
B) Americans concentrate union control in labor federations.
C) In Japan,because most bargaining is conducted at the local or enterprise level,most locals do not affiliate with a national.
D) In Germany,a large number of local unions do most of the bargaining.