The following data summarize the expenditures for the country of XYZ during 2013 in millions of alphabets, the currency of country XYZ. Gross Private Domestic Investment $300 Business Fixed Investment $200 Change in Inventories $100 Exports $200 Imports $200 Personal Consumption Expenditures $800 Government Consumption Expenditures and Gross Investment $500 Statistical Discrepancy $10 Depreciation Expenditures $50 a) Calculate net exports b) Calculate GDP c) Calculate national income d) Assume that the GDP deflator is 120 and calculate real GDP for 2013.