If the Top Four Firms Account for $75 Billion in Sales

question 31

Multiple Choice

If the top four firms account for $75 billion in sales and total industry sales are $300 billion,it follows that the four-firm concentration ratio is

• A) 0.25.
• B) 0.75.
• C) 1.75.
• D) 1.25.

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Definitions:

Lupus

A chronic autoimmune disease where the body's immune system becomes hyperactive and attacks normal, healthy tissue, leading to inflammation and tissue damage in various parts of the body.

Tumor Marker

Substances often produced by cancer cells or by the body in response to cancer, used in the blood, urine, or tissues to help detect and manage some types of cancer.

Tumor Supresser Gene

A gene that protects a cell from one step on the path to cancer. When this gene mutates or is absent, it can lead to tumor formation.

P53

A tumor suppressor protein that plays a crucial role in cell cycle regulation, DNA repair, and apoptosis.