Consider the following statements regarding the composition of the House of the People (Lok Sabha):

1. There shall be allotted to each State a number of seats in the House of the People in such manner that the ratio between that number and the population of the State is, so far as practicable, the same for all States.

2. Each State shall be divided into territorial constituencies in such manner that the ratio between the population of each constituency and the number of seats allotted to it is, so far as practicable, the same throughout the State.

3. The 84th and 87th Constitutional Amendments separated the criteria for seat allocation among States and within States using different Census years.

Which of the statements given above are correct?