Which of the Following Is True of Multigenerational Assimilation Practices

Which of the following is true of multigenerational assimilation practices?

A) The younger the immigrant is, the more likely they are to assimilate.
B) The older the immigrant is, the less likely they are to assimilate.
C) Older immigrants are the most likely to assimilate.
D) both "the younger the immigrant is, the more likely they are to assimilate" and "the older the immigrant is, the less likely they are to assimilate"