Are Employers Obliged to Provide Information to Trade Union Representatives

Are employers obliged to provide information to trade union representatives for collective bargaining purposes?

A) No, because it would be unfair on the employer in the negotiations.
B) No, because there might be a lot of sensitive information included which the employer might not wish to be known.
C) Yes, if it is information that the employee representatives need to carry on collective bargaining.
D) Yes, but only if the union representatives agree to keep it secret.
E) o make them responsible Union members and Officers