If half the banks in the nation borrow additional reserves totaling $10 million at the Fed discount window, and at the same time the other half of the banks reduce their excess reserves by a total of...

If half the banks in the nation borrow additional reserves totaling $10 million at the Fed discount window, and at the same time the other half of the banks reduce their excess reserves by a total of $10 million, what is likely to happen to the money supply? Explain.