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Each Choice Below Lists a Spectral Type and Luminosity Class

Question 45

Multiple Choice

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


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

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