The Gram Sabha

Which of the following statements about the Panchayati Raj System are correct ? 1. All seats in a Panchayat are filled by persons chosen by direct election, 2. The 'Gram Sabha' consists of persons registered in the village electoral rolls. 3. The Chairperson of a Panchayat is elected in accordance with a law passed by each state. 4. All states in India have a three-tier system of Panchayats. Select the correct answer using the code given below :

In the context of Panchayati Raj, which one of the following is true about Gram Sabha ?