Both RR Lyrae and Cepheid variable stars are stars that, when on the main sequence, wereconsidered to be:
A)low mass.
B)intermediate mass.
C)high mass.
D)zero-age main sequence.
E)blue stragglers.

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The Answer of Both RR Lyrae and Cepheid variable stars are stars that, when on the main sequence, wereconsidered to be:
A)low mass.
B)intermediate mass.
C)high mass.
D)zero-age main sequence.
E)blue stragglers.

Both RR Lyrae and Cepheid Variable Stars Are Stars That