Which of the Following Statements About the South African Australopiths

Which of the following statements about the South African australopiths and Homo sapiens is true?

A) Australopiths probably relied more on the use of tools than did the early Homo.
B) Australopith Au. sediba is a Homo sapiens ancestor.
C) Australopith sexual dimorphism was less pronounced than it is in Homo sapiens.
D) As compared to Homo sapiens, australopiths had large chewing muscles that ran up the jaw.
E) Australopith brain size was approximately the same as Homo sapiens.