Which of the following is true regarding units of geologic time?
AEras are divided into epochs; epochs are divided into periods.
BEpochs are divided into periods; periods are divided into eras.
CPeriods are divided into epochs; epochs are divided into eras.
DEras are divided into periods; periods are divided into epochs.
AEras are divided into epochs; epochs are divided into periods.
BEpochs are divided into periods; periods are divided into eras.
CPeriods are divided into epochs; epochs are divided into eras.
DEras are divided into periods; periods are divided into epochs.