If the Value of Exports Equals $6

If the value of exports equals $6.5 billion and the value of imports equals $8.0 billion in a year, then _____

A) together imports and exports add $1.5 billion to the GDP.
B) together exports and imports add $6.5 billion to the GDP.
C) together exports and imports reduce the gross domestic product (GDP) by $1.5 billion.
D) together exports and imports add $14.5 billion to the GDP.
E) together exports and imports add nothing to the GDP.