Vito Ranieri Is an Official of Local 12 of the ABCO

Vito Ranieri is an official of Local 12 of the ABCO, an international union. He is vigorous in defending the rights of the workers at Vulcan Industries, and the members of Local 12 are devoted to him. His manager, Pat Ng, has been looking for an excuse to "get" Vito for years. Finally, he finds Vito lighting up in a no-smoking area, and he immediately suspends him without pay for one week. There is currently a collective agreement in force between Local 12 and Vulcan. Like all agreements, it contains provisions dealing with discipline, and it is clear that Pat did not follow these provisions. Which of the following is TRUE?

A) The union can now take the workers out on strike.
B) The union can take the workers out on strike only if they vote in favour of that step.
C) The union cannot strike until it first attempts mediation.
D) The union cannot strike until it first submits to arbitration.
E) The union can grieve the suspension on Vito's behalf.