The correct answer is - D. It was a blend of Russian nationalism and communist ideology.
The Soviet nationalism is unique and weird at the same time, with the political system being consisted of the two totally opposite ideologies, nationalism and communism.
The nationalism is far on the right side of the political spectrum, while the communism is far on the left side of the political spectrum, so combining those totally different ideologies is not something that can be seen often.
Unfortunately, both of them were performed in an extreme manner, and millions of people suffered and lost their lives, families, and homes because of it.
