Real GDP grew 1 percent in the first quarter of 2011. Business investment increased 3.2 percent, exports

Question:

Real GDP grew 1 percent in the first quarter of 2011. Business investment increased 3.2 percent, exports grew 1.6 percent, and imports rose by 2.2 percent.
Use the letters on the figure in Problem 3 to indicate the flow in which each item in the news clip occurs. How can GDP have grown by only 1.0 percent with business investment and exports up by much more than 1 percent?