What happens to checkable deposits in the banking system when the Fed lends an additional​ $1 million to the First National​ Bank, assuming that the required reserve ratio on checkable deposits is​ 10%, banks do not hold any excess​ reserves, and the​ public's holdings of currency do not​ change? A. Checkable deposits rise by​ $1 million. B. Checkable deposits rise by​ $10 million. C. Checkable deposits rise by​ $100,000. D. Checkable deposits rise by​ $900,000.