问题: Americansaredisturbedbygeneralizationsothersmakeaboutthembecause
A: differentAmericanshavedifferentsourcesoforigin
B:notallAmericanswerebornandraisedintheUS
C:mericanculturehasnotbeenthoroughlystudied
D:They,asindividuals,donothavethesameideasandwaysofdoingthings.
