4. Suppose that a simplied balance sheet for a bank is as follows: Liabilities and Equity Reserves $10,000 Deposits $70,000 Loans $66,000 Equity $6,000 (a) If the required reserve ratio set by the Central Bank is 10%, how much excess reserves does this bank hold? (b) What is the maximum amount by which this bank can expand its loans? (c) If this bank makes the loans in part (b), show the immediate impact on the bank's balance sheet, assuming that households hold only deposit but not currency. What is the maximum change in money supply due to the loan