Consider the following statements regarding the District Planning Committee (DPC).

1. Every state must establish a district planning committee at the district level to aggregate the plans developed by panchayats and municipalities in the district and to draft a district-wide development plan.

2. The state law made for purpose must provide that at least four-fifths of the members of a district planning committee be elected by the elected members of the district panchayat and municipalities within a district, from among themselves.

3. The proportion of these individuals on the committee should be proportional to the ratio of the district's rural and urban populations.

4. The chairperson of such committee shall forward the development plan to the state government.

Which of the statements given above is/are correct?