Which of These Variable Stars Would Be Classified as an RR

question 111

Multiple Choice

Which of these variable stars would be classified as an RR Lyrae?

• A) a K giant with a period of 14 days
• B) a pulsar with a period of 0.14 seconds
• C) a B supergiant with a period of 0.14 days
• D) an F giant with a period of 14 hours
• E) an M giant with a period of 140 days

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