Which Is Not True of the El Niño Southern

Which is not true of The El Niño Southern Oscillation (ENSO) phenomenon?

A) it creates the smallest variation in climate from year to year on a global scale.
B) it involves lower than normal pressure in the western Pacific and higher than normal pressure in the eastern Pacific,reversing the trade winds.
C) it brings rain to some areas and drought to others,predictably and consistently.
D) it is linked to droughts in India,floods in the southwestern United States,and droughts in South Africa and Australia.
E) it is completely understood now,and can be predicted decades in advance.