What is energy input in man subsidized solar powered ecosystem?

• A. 10,000 to 50,000 kcal/m² per year
• B. 3,000 to 40,000 kcal/m² per year
• C. 30,000 to 40,000 kcal/m² per year
• D. 10,000 to 40,000kcal/m² per year