5 Reserves Loans Securities Property Assets Liabilities Net Worth 60 Checkable Deposits 100 Stock Shares 25 100 150 135 5 Refer to the accompanying consolidated balance sheet for the commercial banking system Assume the required reserve ratio is 12 percent All figures are in billions of dollars The maximum amount by which the commercial banking system can expand the supply of money by lending is A 350 billion B 250 billion C 450 billion D 600 billion