Which of the following was/were the feature(s) of Lenin's New Economic policy (NEP) for the Soviet Union? 1. Private retail trading was strictly forebidden 2. Private enterprise was strictly forbidden 3. Peasants were not allowed to sell their surplus 4. To secure liquid capital, concessions were allowed to foreign capitalists, but the state retained the option of purchasing the products of such concerns Select the correct answer using the code given below:

• A

  1 only
• B

  2 and 3
• C

  1,2 and 4
• Correct answer
  D

  4 only

Hence, the correct answer is option: 'D'.