Which of the following statements are true about ecosystem? Select the correct answer from the codes: 1. Ecosystem comprises both biotic and abiotic components. 2. Solar radiation is the main driving force of the ecosystem. 3. Ecosystem is a closed system. 4. Ecosystem does not have its own productivity Codes:

• A. 1 and 2            
• B. 2 and 3
• C. 1 and 3            
• D. 3 and 4