Jeremy Was Terminated by His Employer for Violating Company Rules

Jeremy was terminated by his employer for violating company rules.He challenged the termination by filing a grievance.Eventually,the matter went to arbitration and Jeremy's termination was ruled to have been improper.The employer filed a claim in court to have the arbitrator's ruling overturned since the employer claimed the facts clearly demonstrated Jeremy had violated the express rules of the company.The employer claimed that the arbitrator had ignored the obvious and had committed a serious mistake of fact.A court may overturn an arbitrator's ruling if:

A) it is proven that the arbitrator made a serious error of fact.
B) the court finds the ruling is contrary to public policy.
C) Both of the above are correct.
D) Neither of the above is correct.