When a central bank buys bonds, the money supply in circulation does what?

1. Open market operations move money between the central bank and the banks. 2. Buying bonds means paying money out to those banks. 3. Money flows from the central bank to individual banks, increasing the money supply. 4. So the money supply in circulation increases. _Source: OpenStax Principles of Macroeconomics 3e (CC BY 4.0), Ch 15 'Monetary Policy and Bank Regulation', sections 15.1-15.5_