Dunlop's Model Suggests That All 'Industrial Relations Systems' Are Comprised

Dunlop's model suggests that all 'industrial relations systems' are comprised of:

A) three main actors who interact to produce rules, which regulate behaviour within a system and who operate within a larger context which influences this behaviour.
B) three main actors who interact in a systematic way, moderated by industrial relations tribunals.
C) None of the options given here is correct
D) three main actors who interact to produce rules which are then made formal through the industrial relations system.