Consider the Following Annual Transactions in Canada's Current Account

Consider the following annual transactions in Canada's current account.If Canadian exports of goods and services are $40 billion,imports of goods and services are $35 billion,transfers by Canadians to foreigners are $2 billion and transfers from foreigners to Canadian citizens are $1 billion,then the current account balance is

A) + $6 billion.
B) + $4 billion.
C) - $4 billion.
D) - $6 billion.
E) - $7 billion