Suppose that, for every 1-percentage-point decline of the discount rate, commercial banks collectively borrow an additional $2 billion from Federal Reserve Banks. Also assume that the reserve ratio is 20 percent. If the Fed increases the discount rate from 4.0 percent to 4.25 percent, bank reserves will: Group of answer choices increase by $0.5 billion and the money supply will increase by $2.5 billion. decline by $0.5 billion and the money supply will decline by $2.5 billion. increase by $0.75 billion and the money supply will increase by $3.75 billion. increase by $1 billion and the money supply will increase by $5 billion.