Answer:
E. Most cash purchases are likely to be rounded off to a higher unit of the currency once the polka is taken out to the system.
Step-by-step explanation:
A nation's inflation rate is given by the general rise in the price of its products and services. If the Polka is taken out of circulation, and most businesses will start rounding off their prices to a higher unit, then the general price level in West Tarragon will rise. If the Polka wasn't worth that much then the rise in the general price level will be small, but it still will be an increase.