Each Choice Below Lists a Spectral Type and Luminosity Class

question 39

Multiple Choice

Each choice below lists a spectral type and luminosity class for a star. Which one is a red supergiant?

• A)spectral type M2, luminosity class I
• B)spectral type O9, luminosity class I
• C)spectral type M1, luminosity class V
• D)spectral type G2, luminosity class V

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Definitions:

Net Operating Income

The profit generated from a company's normal business operations, excluding expenses and revenues that are outside its core business activities.

Contribution Format

is a profit reporting format that separates fixed and variable costs, highlighting the contribution margin which helps in decision-making.

Break-even Point

The production level or sales volume at which total revenues equal total expenses, resulting in no profit or loss.

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