The Fed threw a lot of money at the financial crisis in 2008 to unfreeze credit markets and encourage economic activity. As part of its effort to keep the interest rate​ low, the Fed purchased government bonds worth​ $300 billion between March and September 2009. By​ October, the Fed held​ $770 billion in government​ securities, nearly double its​ pre-crisis total. Before the​ crisis, the Fed held mainly government​ securities, which it used to control the quantity of money in the economy. Now government securities make up just​ 35% of the​ Fed's balance sheet. Explain how the Fed uses its government securities to control the nominal interest rate
When the Fed purchases government securities, bank reserves and bank deposits .
A. increase; increase
B. decrease; increase
C. decrease; decrease
D. increase; decrease