Which of the Following Is NOT True of the History

Which of the following is NOT true of the history of German language and its speakers in the U.S.?

A) The U.S. saw highest levels of immigration of German speakers in the 19th c.
B) German speakers are still successfully resisting the shift to monolingual English, as indicated by rising numbers of heritage German classes in U.S. schools and colleges
C) The German language was used in the U.S. not only by German immigrants but also by immigrants for whom German was not a native language, such as Swedes and Norwegians, but who used it to talk to one another
D) German parochial schools existed throughout the Midwest and parts of Texas at the beginning of the 20th century
E) The anti-German sentiment during WWI and afterwards resulted in attempts to ban the German language in some states