Which of the following is/are extra constitutional and extra-legal device (s)for securing co-operation and co-ordination between the States in India? [IAS 1995] 1. The National Development Council. 2. The Governor's Conference. 3. Zonal Councils. 4. The Inter-State Council

• A. I and II
• B. I, III and IV
• C. III and IV
• D. Only IV