13. When the central bank buys an asset from the public, in central bank liabilities associated with the asset purchase causes the money supply to . When the central bank sells an asset to the public, in central bank liabilities causes the money supply to A) an increase; expand; a decrease; shrink B) a decrease; shrink; an increase; expand C) an increase; shrink; a decrease; expand$| D) a decrease; expand; an increase; shrink