Which of the following best describes nativists' views on chinatowns?

a. they believed chinatowns were unlike other parts of a city and should not exist.
b. the believed chinatowns were dangerous but necessary to promote assimilation into american culture.
c. they believed chinatowns were strange, but they added rich culture to a city.
d. they believed chinatowns were necessary because they segregated immigrants from other parts of the city.