If the US Current Account Balance Is - $500 Billion and the and the Capital

If the U.S. current account balance is - $500 billion and the capital account balance is +$510 billion,

A) the U.S. government's holdings of foreign currency increases by $10 billion.
B) U.S. exports are greater than U.S. imports.
C) the U.S. official settlements account balance is $10 billion.
D) foreign investment in the United States is smaller than the U.S. investment abroad.