Refer to the Accompanying Data (All ?Gures in Billions of

$$\begin{array} { | l | r | } \hline \text { Gross Investment } & \$ 18 \\\hline \text { National Income } & 100 \\\hline \text { Net Exports } & 2 \\\hline \text { Personal Income } & 85 \\\hline \text { Personal Consumption Expenditures } & 70 \\\hline \text { Saving } & 5 \\\hline \text { Government Purchases } & 20 \\\hline \text { Net Domestic Product } & 105 \\\hline \text { Statistical Discrepancy } & 0 \\\hline\end{array}$$ Refer to the accompanying data (all ?gures in billions of dollars) . From this information we can conclude that the net foreign factor income is

A) negative $5 billion.
B) zero.
C) positive $5 billion.
D) positive $15 billion.