Suppose Grovner's Exports Equal $950 Billion, Its Imports Equal $1,000

Multiple Choice

Suppose Grovner's exports equal $950 billion, its imports equal $1,000 billion, and
Purchases of foreign assets by its citizens equals $900 billion. What is Grovner's balance on its current account?

A) $50 billion
B) -$50 billion
C) $850 billion
D) -$850 billion