A Collective Agreement Contains a Provision That the Employer Shall

A collective agreement contains a provision that the employer shall pay the insurance premiums for a dental plan. If there is a dispute relating to this benefit how the matter will be resolved:

A) A grievance must be filed pursuant to the collective agreement.
B) A claim must be made against the insurer.
C) The employee must sue the employer.
D) The union must sue the employer.
E) either a or b