Graph with it

\"Operation Twist\" is a program conducted by the US. Federal Reserve (the Fed) in late 2011 and 2012 to help stimulate the economy. Through this program, the Fed sold short-term bonds it had already held, and the sales proceeds were used to purchase longer-term Treasury bonds. Such operation would \"twist\" the yield curve of Treasury bonds. Draw a graph to illustrate and explain in words how the yield curve of the US. Treasury bonds would be \"twisted\" by this program