What Has Been the Outcome of Canadian-United States Differences on the Retention

What has been the outcome of Canadian-United States differences on the retention of immigrant culture following immigration?

A) Immigrants to Canada have been better able to retain their culture for generations.
B) Second-generation offspring in both nations have fared considerably better than their parents.
C) Preservation of non-official languages remained high in successive generations in Canada.
D) In the Unites States, people have intermarried at a significantly higher rate than in Canada resulting in more cultural homogeneity.