Each Choice Below Lists a Spectral Type and Luminosity Class

question 117

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 M1, luminosity class V
• C) Spectral type O9, luminosity class I
• D) Spectral type G2, luminosity class V

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