Consider the following tasks
1. Superintendence, direction and conduct of free and fair elections.
2. Preparation of election rolls for all elections to the parliament, State Legislature and the office of the President and the Vice-President
3. Giving recognition to political parties and allotting elections symbols to political parties and individual contesting the election
4. Proclamation of final verdict in the Centre of the election disputes
Which of the above are the functions of the election Commission of India ?