Economists Argue That If an Economy Is Highly Monopolized

Economists argue that if an economy is highly monopolized:

A) it will have higher prices for its goods and services than a more competitive economy.
B) its average costs of production will be less than the average costs of production in a more competitive economy.
C) it will have higher inflation rates than a more competitive economy.
D) it will have lower inflation rates than a more competitive economy.