When Does a Nation Have an Unfavourable Balance of Trade

When does a nation have an unfavourable balance of trade?  

A)  when the nation has a surplus in its balance of payments 
B)  when the nation has a deficit in its balance of payments 
C)  when the value of the nation's imports of goods is greater than the value of its exports of goods 
D)  when the nation's current account is in surplus and its capital account is in deficit