Of the following statements about protected areas that have been established to preserve biodiversity, which one is not correct?

A) About 25% of Earth's land area is now protected.
B) National parks are one of many types of protected areas.
C) Most protected areas are too small to protect species.
D) Management of a protected area should be coordinated with management of the land surrounding the area.
E) It is especially important to protect biodiversity hot spots.