I would think that it is C but I'm not that sure so get more answers.
The Nazi death camps in chronological order are: Chelmno, Belzec, Sobibor, Treblinka, Majdanek and Auschwitz-Birkenau. In 1941 the Chelmno camp was opened in Poland, soon followed in 1942 were Belzec<span>, </span>Sobibor<span>, and </span>Treblinka. The largest death camp was opened in 1943 and was known as Auschwitz-Birkenau,
The start of the war in Europe is generally held to be 1 September 1939<span>, beginning with the German invasion of Poland; Britain and France declared war on Germany two days later.</span>
