Answer: A. costs of moderate inflation are nearly zero whereas high inflation is quite costly.
Step-by-step explanation:
Economists generally believe that moderate inflation is actually good for the economy as prices need to increase in a healthy manner overtime in order to drive consumption. This means that to them, the cost of moderate inflation is nearly zero.
This is a sharp contrast to high inflation which most economists generally believe to be costly as it reduces the savings of people as well as their real wages and welfare.