Which of the Following Statements Is True

Which of the following statements is true?

A) If the numbers of a population decrease, an endangered species may be reclassified as a threatened species.
B) If the numbers of a population decrease, a threatened species may be reclassified as an endangered species.
C) If the numbers of a population increase, a threatened species may be reclassified as an endangered species.
D) The terms threatened species and endangered species mean the same thing.