Local complementary currencies, such as the regional 'Eco-Pound', are designed to support local independent businesses and keep transactions within a specific geographic community.
Which one of the following changes would be most likely to cause a currency to lose its acceptability as a medium of exchange?
It is made from more durable composite materials
Its supply is increased at an uncontrollable rate
It is issued in a wider range of smaller denominations
It is integrated into secure digital mobile wallets
