New Haven, Connecticut:

In April 2009, the United States Supreme Court agreed to hear a suit over reverse discrimination brought by 20 white and Hispanic firefighters against the city. The suit involved the 2003 promotion test for the New Haven Fire Department. After the tests were scored, no blacks scored high enough to qualify for consideration for promotion, so the city announced that no one would be promoted. On 29 June 2009, the United States Supreme Court ruled in favor of the firefighters, agreeing that they were improperly denied promotion because of their race. The case, Ricci v. DeStefano, became highly publicized and brought national attention to New Haven politics due to the involvement of then-Supreme Court nominee (and Yale Law School graduate) Sonia Sotomayor in a lower court decision.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Upon reaching a verdict the summary statement was that city denied the firefighter a promotion because of what?
because of their race