The table gives some information about the U.S. international transactions in 2008.
$$
\begin{array}{lr}
\text { Item } & \begin{array}{c}
\text { Billions of } \\
\text { U.S. dollars }
\end{array} \\
\hline \text { Imports of goods and services } & 2,561 \\
\text { Foreign investment } & \\
\quad \text { in the United States } & 955 \\
\text { Exports of goods and services } & 1,853 \\
\text { U.S. investment abroad } & 300 \\
\text { Net interest income } & 121 \\
\text { Net transfers } & -123 \\
\text { Statistical discrepancy } & 66
\end{array}
$$
c. Did U.S. official reserves increase or decrease?
d. Was the United States a net borrower or a net lender in 2008? Explain your answer.