Assume that a country called Autaria has a current account balance of -$200 billion for the financial year 2018-19. Assume further that Autaria's non-reserve assets decreased by $300 billion while non-reserve liabilities increased by $100 billion during the same period. Assuming no statistical discrepancy, Autaria's Official Settlement Balance should be: A. -$400 billion B. $0 C. -$200 billion D. $400 billion E. $200 billion