The Following Is an Excerpt from an Interview with the German

The following is an excerpt from an interview with the German politician Thilo Sarrazin, an outspoken critic of immigration into Germany (Thinking Like a Historian) . In it, he explains what he would do to stop further immigration: "First: change the benefits system-immigrants receive no benefits for at least ten years. Second: change the permanent residency law-only those able and willing to make a long-term, highly skilled contribution to Germany receive residency rights. Third: social and family benefits in Germany should be dependent on adequate knowledge of the language and efforts at integration. Fourth: we must clearly say to the Muslim immigrants who are already here: at some point you become German, even if you obviously continue to cook Turkish food and go to the mosque, and if you don't want to do that, it's best you return home. Opinion polls show that more than 60 percent of Turks in Germany speak no German at all or cannot speak it well, and a third would leave Germany immediately if there were no German welfare benefits."
As part of a strategy to limit the flow of immigrants into Germany, Sarrazin advocated

A) setting racial quotas.
B) changing the benefit system.
C) establishing means tests for immigrants.
D) establishing literacy tests for entry visas.