According to the interviewee, why is it necessary to limit the population even in Europe and America?
A.
European people and American people shouldn't shirk the responsibility of the whole globe.
B.
The people in Europe and Americas consume a far greater proportion of the world's resources and the world's food.
C.
The number of the people in Europe and Americas is no less than that of in underdeveloped world.
D.
They can save more to meet tile needs of the underdeveloped world.