Which of the following statements is incorrect regarding 'Demographic Transition Theory'?
1
It is based on the hypothesis that declines in mortality are preceded by declines in fertility.
2
This theory was developed by W.S. It was originally introduced by Thompson and Frank W. Notestein.
3
This theory states that the socio-economic change of a society occurs simultaneously with its demographic transition.
4
The first stage of the demographic transition is characterized by a declining birth rate and low death rate.