Sizable economic profits can persist over time under monopoly if the monopolist
A.	produces that output where average total cost is at a maximum.
B.	is protected by barriers to entry.
C.	operates as a price taker rather than a price maker.
D.	realizes revenues that exceed variable costs.
Answer:B
Sizable economic profits can persist over time under monopoly if the monopolist
A.	produces that output where average total cost is at a maximum. B.	is protected by barriers to entry. C.	operates as a price taker rather than a price maker. D.	realizes revenues that exceed variable costs.