If USResidents Purchase $600 Billion Worth of Foreign Assets and Foreigners

Multiple Choice

If U.S.residents purchase $600 billion worth of foreign assets and foreigners purchase $300 billion worth of U.S.assets,

A) U.S.net capital outflow is $300 billion;capital is flowing into the U.S.
B) U.S.net capital outflow is $300 billion;capital is flowing out of the U.S.
C) U.S.net capital outflow is -$300 billion;capital is flowing into the U.S.
D) U.S.net capital outflow is -$300 billion;capital is flowing out of the U.S.