2) A credit card can serve as a medium of exchange, but it is not a For this reason, credit cards are referred to as a Which of the following items can be considered money in the Canadian economy? Explain your answers by discussing the three functions of money-medium of exchange, store of value, and unit of account. a) A Canadian $100 bill ) A Visa credit card ) The balance in an interest-earning savings account ) A share of Canadian Tire stock