Which of the following initiatives of the Government is/are said to be giving effect to the Directive Principles of State Policies? 1. Old age pension schemes for people above 65 years. 2. Adoption of Criminal Procedure Code (1973). 3. The Pradhan Mantri Krishi Seenchayi Yojana 4. The Mahatma Gandhi National Rural Employment Guarantee Program. Select the correct answer using the code given below.