Which of the Following Is NOT a Relevant Consideration in a Court

Which of the following is NOT a relevant consideration in a court determining whether a strike is illegal:

A) Whether employees had received independent legal advice.
B) Whether notice of a successful strike vote was given to the employer.
C) Whether the parties had submitted to a conciliation process.
D) Whether the parties observed a cooling off period prior to the employees commencing the strike.
E) Whether the parties had previously attempted to bargain a new contract