Read the following passage:

Championships were coming up and the underdog team had made the playoffs! Their first game was a surprise to everyone when the underdog team beat the number one team by 20 points! Tonight was the semi-finals, and if the underdogs won, it would be the best their team had ever done.
Which of the following would not be relevant prior knowledge to making an inference about this passage?

The story of an underdog winning in the end is a classic American story.
It is usually difficult for a losing team to beat the number one team.
Rival teams have a fierce competitive streak between them.
When people write about history, usually it implies someone is about to do something different from what's been done in the past.