Hitler was never one to believe in things like "All races should live in peace" or "Revolution can create a classless society". Although B) is a good answer as well, it's kind of unsophisticated as an answer.
The "B) Jewish people are to blame for Germany's troubles" sentence is a point Hitler makes in his book Mein Kampf. The Main Kampf is a book written by Adolf Hitler when he was at the Landsberg Prison and this book described Adolf Hitler's experience and reason of his belief. This book was released<span> in 1925.</span>
The correct answer is B) They established ties with local rulers. What this did was it got them on good terms with the people of the land, and therefore increased their power. Hope this helps.
