The Central Bank take a decision in 1/9/2015 to extend the average maturity of its holdings of securities, this means that the bank intended to purchase $ 400 billion Treasury securities by June 2016, with remaining maturities of 6 years to 30 years,in addition to sell $ 400 billion Treasury securities with remaining maturities of 3 years or less. Assume that the bank will purchase 10 year bonds and sell 1 year T- bills, what would happen to both short term and long-term yields?