Which of the Following Statements Is True

Which of the following statements is true?

A) Radiocarbon dating of archaeological sites suggests that humans have lived in Australia for at least 40 000 years.
B) Studies using thermoluminescence suggest that humans have lived in Australia for at least 50 000 years.
C) Increased levels of charcoal within pollen records suggest that humans may have lived in Australia for as long as 128 000 years.
D) Examination of fossil skuls show that Australia was populated by a number of different immigrant groups.
E) All of the answers are true.