I had the question "How many World Series did Jorge Posada win in the 90s?" I selected the answer "2". The system indicated I was incorrect and that the answer was "3". However, this is incorrect. Posada was apart of the 1998 and 1999 world championship Yankees teams. He briefly played on the team in the regular season in 1996, but was not on the postseason roster for the Yankees world championship run that year. And he was on the 2000 world championship team but obviously that is outside the parameters of the question.
Baseball reference shows that that he was not on the '96 postseason roster per the postseason statistics section.