Which of the Following Is NOT True of Minority Ethnic

Which of the following is NOT true of minority ethnic groups in Japan?

A) The Ainu and the Okinawans both have their own distinctive language and culture despite being part of Japanese society for hundreds of years.
B) The majority of ethnic Koreans remain resident aliens.
C) The Ainu have been declared to be an indigenous people of Japan, although the Okinawans have not.
D) All ethnic minority groups are concentrated in the poorest prefectures of the country.
E) The core issue facing ethnic minorities is the discrimination they experience in employment and marriage.