Nazis thought that killing Jewish people, Roma, and other groups would purify the German race. Hence, option B is correct.
What is Nazi thought killing?
Nazis started to adhere to the Aryan master race's worldview. Nazis believed that Aryans were tall, pure-blooded people with blond hair and eyes. The Nazis hated Jews, Gypsies, and other groups because they were seen as beneath the German race.
Jews, Gypsies, and others were relocated to ghettos and concentration camps. The gas-killing vans were portable gas chambers that could be carried anywhere. These vans served as mobile equivalents of the gas chambers used during the Holocaust's annihilation by Nazi Germany. Chambers resembling those found in concentration camps' gas chambers were added to these trucks. As well as being used to poison individuals with carbon monoxide.
Thus, option B is correct.
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