The Difference Between an Arbitrator and a Mediator Is That

The difference between an arbitrator and a mediator is that:

A) a mediator is a neutral third party,while an arbitrator is a member of the union.
B) a mediator's solution to a labor dispute is enforceable,while the arbitrator's solution is non- enforceable.
C) an arbitrator's solution to a labor dispute is binding on the participants,while a mediator's solution is not binding.
D) an arbitrator is a neutral third party,while a mediator is a representative of management.
E) an arbitrator is a representative of management,while a mediator is a representative of the union.