Suppose that Consumption = $160 billion, Net Investment = $40 b, Depreciation = $30 b, Government Spending = $50 b, Net Exports = $20 b and Imports = $50 b. What does exports equal as a percent of Gross Domestic Product?

a. 16.67%
b. 18.42%
c. 21.88%
d. 23.33%