-The Above Gives Some of the Balance of Payments Accounts

$\begin{array}{|l|l|}\hline \text { Item } & \begin{array}{l}\text { Amount } \\\text { (billions of dollars) }\end{array} \\\hline \begin{array}{l}\text { Imports of goods and } \\\text { services }\end{array} & 1,400 \\\hline \begin{array}{l}\text { Exports of goods and } \\\text { services }\end{array} & 1,600 \\\hline \text { Net interest } & 0 \\\hline \text { Net transfers } & 0 \\\hline \begin{array}{l}\text { Foreign investment in } \\\text { the United States }\end{array} & 480 \\\hline \begin{array}{l}\text { US.investment } \\\text { abroad }\end{array} & 700 \\\hline\end{array}$
-The above gives some of the balance of payments accounts of the United States in 2020.
a) What is the current account balance?
b) What is the capital account balance?
c) What is the official settlements account balance?