Why Have Asians as a Collective Group Been More Accepted

Why have Asians as a collective group been more accepted in America than other ethnic minorities?

A) Asians are perceived as less threatening to dominant culture.
B) Asians have taken jobs other Americans have not wanted.
C) Asians have assimilated at a faster rate than other ethnic minorities.
D) Asians have fought harder for acceptance than other ethnic minorities.