The difference between a country's exports and imports is called the country's trade balance. if one country had a trade balance of - $86 billion in 1991, $142 billion in
1995, and - $43 billion in 1994. what was the total trade balance for these years?
a. -271 billion dollars
ob. 271 billion dollars
o c. 13 billion dollars
o d . -13 billion dollars