A system of managed floating exchange rates (aka 'dirty float') is Group of answer choices a system in which governments need to reach a prior agreement among them before they may attempt to moderate exchange rate movements without keeping exchange rates rigidly fixed a system in which governments are forbidden from attempts to moderate exchange rate movements without keeping exchange rates rigidly fixed a system in which governments may attempt to moderate exchange rate movements without keeping exchange rates rigidly fixed a system in which governments use flexible exchange rates