How is the relationship between the divisions of the geologic time scale (ex, eons and eras) different than the relationship between hours and minutes?

Multiple choice question.
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A)
Eras are made up of eons, but hours are made up of minutes.

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B)
Eons are made up of eras, but minutes are made up of hours.

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C)
Eras are not even divisions of time, while minutes are.

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D)
Eons are even divisions of time, while hours are not.