Which of the following statements is true ?The Panchayat system exists in all states of India except Nagaland, Meghalaya and Mizoram. It also exists in all Union Territories except Delhi The Panchayat system is introduced in India by the Constitution 74th Amendment Act, and envisages a three tier system of Local GovernancePanchayat system is not provided for states having less than 2 million populationGram Panchayat can continue for 3 years from the date of election