Which of the following statements are correct about the Panchayat Raj system?

1. Gram Sabha is the foundation of the Panchayati raj system consisting of persons registered in the electoral rolls of a village comprised within the area of Panchayat at the village level.

2. The members of the panchayat at the Village level shall be elected directly whilst at the intermediate and district levels shall be elected indirectly.

3. The state legislature may endow the Panchayats with such powers and authority as may be necessary to enable them to function as institutions of self-government.

4. There is a reservation of not less than one-half of the total number of seats for women at all levels.

Select the correct answer using the code given below.