With reference to the Demographic Transition Theory, consider the following statements:

1. According to the theory, the population of a given region changes from high births and high deaths to low births and low deaths.

2. In India, the demographic transition is not yet complete as the mortality rate has been reduced but the birth rate has not been brought down to the same extent.

3. The first stage has high fertility and a high mortality rate.

Which of the statements given above is/are correct?