Peter Was Fired After His Manager Caught Him Breaking a Workplace

Peter was fired after his manager caught him breaking a workplace rule. Peter filed a grievance and the arbitrator found that while he had contravened an important rule, the collective agreement required more than a single transgression to show just cause for dismissal. Which of the following awards is the arbitrator permitted to craft in her decision?

A) award damages to Peter in the form of the appropriate notice of dismissal since it is not possible for an arbitrator to reinstate an employee who has been dismissed
B) rewrite the provision in the collective agreement to allow dismissal if employees break the particular rule in question
C) substitute a warning or suspension and reinstate Peter's job
D) rewrite the provision in the collective agreement to prevent the employer from enforcing the particular rule
E) none of the above