A recognition clause in a collective agreement: Question 2 options: 1) cannot change the bargaining unit as provided in the certificate issued by the Labour Relations Boar when the union is granted bargaining rights 2) may describe the bargaining unit by referring to the certificate issued by the Labour Relations Board 3) provides that the union recognizes the right of the employer to manage the organization 4) describes the bargaining unit by setting out the names of employees who are in the bargaining unit 5) provides that the employer must require union membership as a condition of employment