In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.
Q: Question: What countries battled in the Battle of Kursk? Passage:The division traced its heritage back to the 7th Guards Tank Corps, formed during World War II in July 1943 from the 15th Tank Corps for its performance in Operation Kutuzov, the Soviet counteroffensive after the Battle of Kursk. It was part of the 3rd Guards Tank Army during the war, and was converted into a tank division like the rest of the tank corps in 1945. Stationed in Czechoslovakia postwar, it was briefly downsized into a regiment in 1946 and relocated to eastern Germany in 1947, becoming part of the Group of Soviet Occupation Forces in Germany, which later became the Group of Soviet Forces in Germany (GSFG). The division was stationed at Rolau in East Germany for the rest of the Cold War and participated in the Warsaw Pact invasion of Czechoslovakia, Operation Danube, in August 1968. For much of the 1980s it formed part of the 3rd Red Banner Army. As the Cold War wound down, the troops of the GSFG, renamed the Western Group of Forces in 1989, were pulled out of Germany, and the 7th Guards Tank Division was withdrawn to Pyriatyn in Ukraine, where it became a storage base in July 1990.
Links: a. Battle of Kursk b. Group of Soviet Forces in Germany c. 15th Tank Corps d. 3rd Shock Army
A:
a