Consider the following statements:

Once the Central Government declares an area as an ‘Eco-Sensitive Zone’ around a protected wildlife sanctuary:

1. Commercial mining activities are completely banned within the zone.

2. Tourism activities are permitted but regulated to ensure minimal impact on the environment.

3. Local communities are allowed to practice sustainable agriculture within the zone.

4. Setting up of new industrial establishments is prohibited in the zone.

How many of the above statements are correct?