What is the difference between arbitration and mediation?

A$)$ Arbitration and mediation are the same thing

B$)$ In mediation, a third party helps the parties to find their own resolution whereas in arbitration a third party imposes resolution

C$)$ In arbitration, a third party helps the parties find their own resolution whereas in mediation a third party imposes a resolution

D$)$ Mediation is a free service and arbitration is a paid service

E$)$ None of the above