When a union is given statutory authority to be the exclusive bargaining agent for the employees in the designated bargaining unit, all but which of the following is a result?
a) The union has the sole right to negotiate terms and conditions of employment on behalf of the employees.
b) Individual employees within the bargaining unit can negotiate their terms separately.
c) The employer must negotiate only with the designated union.
d) The union can file unfair labor practice charges against the employer for refusing to bargain.