Can you please show me work for a), b) and c)? I got 2500 for a) and 0.25 for c), and no idea why both a) and C) are the right answer.

100 - Landowners' share of income Landowners' after land tenure share of : 75 - reform income Cumulative share of income (%) 50 - Farmers' share of income after land tenure Farmers' reform share of Lorenz income curve shifts due to land tenure reform 90 100 90 farmers 10 landowners Cumulative share of the population from lowest to highest income (%) Based on this information, which of the following are correct? a) Under the 50:50 sharing system, A = 2,000. b) Under the 75:25 sharing system, A = 1,500. c) The Gini coefficient under 75:25 sharing is 0.15