The History of Fire in the Australian Environment Is Recorded

The history of fire in the Australian environment is recorded in the form of preserved charcoal particles in sedimentary deposits. From this evidence we know that Australia

A) had no fires before the late Tertiary, when the climate became dryer.
B) has had frequent fires since the early Tertiary.
C) has had fires since the early Tertiary.
D) has had fires since the Quaternary.
E) has only had frequent fires since eucalypts came to dominate the landscape.