Which of the Following Statements Is Correct with Respect to the Bargaining

Which of the following statements is correct with respect to the bargaining process in collective bargaining?

A) Employers are required to bargain in good faith, which means that they must be prepared to compromise when their initial offer is refused.
B) Once notice has been given by either side, bargaining must commence within the time specified in statute, unless they agree otherwise.
C) Once the employer and the union representatives have completed a collective agreement and signed it, it is binding on all parties. No further steps have to be taken.
D) Once a union has been certified as the legal bargaining agent of the employees, they are the ones in control of when bargaining takes place. They are the only ones who can give notice to commence bargaining.
E) Once a union has been certified, the employer must agree to whatever they represent as the contents of the first contract.