$4.(15)$ The bank you own has the following balance sheet.AssetsReserves$$80$ millionLiabilitiesDeposits$$600$ millionSecurities $50$ millionBorrowings $50$ millionLoans $620$ millionBank capital $100$ milIlon a$)$ Assume there is an unexpected deposit outflow of $$30$ million. Please restate the balance sheet to reflect this change b$)$ If the bank management wants to hold required reserves at $10\%,$ how much must be added to the bank's reserve account? c$)$ On the restated balance sheet, please show the necessary changes if management decides to borrow from another bank? d$)$ What would be the costs of this action? E$)$ Which action is more costly$-$borrowing from the Federal Reserve or borrowing from another bank in the Federal Funds market? Why