Select all the items that describe the jobs of money. store of value tool of bartering unit of account medium of exchange

The following items are described as the jobs of money which includes (1) store of value, (2) unit of account, (3) medium of exchange. The items mentioned are dealing with any money unlike the traditional barter and exchange where you trade item-to-any-item.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.