Which Statement About Geostrophic Gyres Is True

Multiple Choice

Which statement about geostrophic gyres is true?

A) One of the six gyres is the Antarctic Circumpolar Current.
B) Gyres are influenced by the Coriolis effect and the position of continental landmasses.
C) Gyres are formed by deep water currents that flow in a continuous circuit around the five major basins.
D) Sea level is lower in the middle of the gyre.