Consider the following statements:
1. Developmental economics explores topics such as the valuation of natural resources and the trade-offs between economic development and environmental sustainability.
2. Environmental economics explores strategies for promoting economic growth, reducing poverty, and improving living standards.
3. Macroeconomics looks at the aggregate phenomena like overall economic output (GDP), inflation and national income.
4. Microeconomics examines the economic behavior of individual agents, such as households, firms, and industries.
How many of the above statement(s) is/are correct?