Read the passage from "Introduction to the Holocaust.”

In 1933, the Jewish population of Europe stood at over nine million. Most European Jews lived in countries that Nazi Germany would occupy or influence during World War II. By 1945, the Germans and their collaborators killed nearly two out of every three European Jews as part of the "Final Solution,” the Nazi policy to murder the Jews of Europe.

Although Jews, whom the Nazis deemed a priority danger to Germany, were the primary victims of Nazi racism, other victims included some 200,000 Roma (Gypsies). At least 200,000 mentally or physically disabled patients, mainly Germans, living in institutional settings, were murdered in the so-called Euthanasia Program.

As Nazi tyranny spread across Europe, the Germans and their collaborators persecuted and murdered millions of other people. Between two and three million Soviet prisoners of war were murdered or died of starvation, disease, neglect, or maltreatment.

Which statement does the evidence in the passage best support?

Before the Holocaust, the Jewish population of Europe was over nine million.
Many Jews lived in countries that Nazi Germany would occupy during World War II.
The Nazis had a policy, called the “Final Solution,” to murder Jews who lived in Europe.
The Holocaust was the systematic murder of people based on their race or their identity.