Which of the following represents units of geologic time in increasing order?
AEon, era, period, epoch
BEpoch, period, eon, era
CEra, eon, period, epoch
DEpoch, period, era, eon
AEon, era, period, epoch
BEpoch, period, eon, era
CEra, eon, period, epoch
DEpoch, period, era, eon