有一道英语题： James'grade point put him in the top third of the class. Nestor and Elizabeth have the same grade point--top tenth of the same class. Nancy has a lower grade than Elizabeth. If the above info is true. which of the following must also be true. (2) James has a higher grade than Nancy (3) Nestor has a highergrade than Nancy (5) Nestor and James both have a higher grade than Nancy. ----- I am a little confused here. If TOP tenth means top 10%, (3) is correct If TOP third means top 3, All (2)(3)(5)are correct. So which understanding is correct? TOP third means on the top 3 or top 33.3%?