Which of the following statements about immigration in Canada is NOT true?

Which of the following statements about immigration in Canada is NOT true?

A.It is estimated that one-third of Canadians were born in other countries.

B.Immigration has always been an important source of its population growth.

C.Immigration has played an important role in the development of its economy.

D.In the past Britain and Western Europe were the principal sources of Canadian immigration.

正确答案是A