In the article, 'The Hows, Whys and Whats of ULP Strikes,' which one of the following is not among the advice the author gives for enhancing the union's chance of having a strike declared an Unfair Labor Practice (ULP) strike?

a) The union should seek to resolve or otherwise settle outstanding unfair labor practices (ULPs) against the employer before actually striking.
b) The union should discuss the employer's unfair labor practice (ULP)-related conduct in meetings with workers and phrase strike ballot questions to include the employer's ULP.
c) The union should make sure that its picket signs and handouts highlight the employer's ULPs.
d) The union should file charges at the NLRB alleging the unfair labor practices (ULPs) and should allege that the ULPs are prolonging the strike.