which one is correct please ?

A town has a large vegetable exporting industry. There is an increase in demand for its produce at the same time that the population decline. This will lead to:

1. no change in wages but a definite increase in employment.
2. higher wages and a definite increase in unemployment.
3. higher wages, but the change in employment is ambiguous, it could be up or down.
4. higher wages, but a decline in employment.
5. An ambiguous change in wages and an ambiguous change in employment