Which of the Following Is Correct

question 188

Multiple Choice

Which of the following is correct?

• A) Monopoly has a four-firm concentration ratio of 100.
• B) Perfect competition has a four-firm concentration ratio near zero.
• C) Monopolistic competition has a four-firm concentration ratio of more than 40.
• D) Both answers A and B are correct.
• E) Both answers A and C are correct.

---

Definitions:

Posttraumatic Stress Syndrome

This is a psychiatric state induced by either going through or seeing a distressing occurrence, leading to vivid reliving of the event, nightmares, and profound stress.

World Trade Center

A large complex of office buildings in Lower Manhattan, New York, notable for being the site of a terrorist attack on September 11, 2001.

Natural Disaster

A major adverse event resulting from natural processes of the Earth, such as hurricanes, earthquakes, floods, and volcanic eruptions, causing significant impacts on life and property.

First Reaction

The initial response or action taken by an individual in response to a stimulus or situation.