Consider the following statements with regard to revolutionary terrorism after the withdrawal of non co - operation movement: 1. The revolutionary terrorist started to work under a unified banner on an all India basis. 2. The revolutionaries were influenced by the upsurge of working class trade unionism after the war. 3. The success of Russian revolution and the success of the young socialist state in consolidating itself was a major influence on the rise of revolutionary terrorists. Which of the statement given above are correct?

• A.  1 and 2 only    
• B.  2 and 3 only
• C.  1 and 3 only    
• D.  1, 2 and 3