[单选题]London is regarded as the most culturally diverse city in the world due to the following facts EXCEPT that _________.

A.within 10 years 40% Londoners will be from ethnic minority groups
B.most of Britain’s ethnic minority residents live in London, speaking over 300 languages
C.London accommodates about 330,000 refugees and asylum seekers from many other countries
D.many young people are immigrants from different backgrounds