Which Statement Reflects the Views of Many of the World's

Which statement reflects the views of many of the world's leading population scientists and analysts? 

A)  Some parts of the world have exceeded their carrying capacity for humans, although most parts do not have this concern. 
B)  Some parts of the world have exceeded their carrying capacity for humans, and, given current population trends, eventually other parts of the world will too. 
C)  All parts of the world are well below their carrying capacity for humans. 
D)  All parts of the world have exceeded their carrying capacity for humans.