Which of the Following Is True of Organizations Like the International

Which of the following is true of organizations like the International Labor Organization and the Organization for Economic Cooperation and Development in terms of their role in international labor relations?

A) They have been highly successful in uniting unions of different countries.
B) They have significantly reduced competition between national unions.
C) They have adopted codes of conduct for multinational firms to follow in labor relations.
D) They are responsible for the import of employment practices from the home country of the firm.
E) They have increased the bargaining power of multinational firms.