Some Powers in the Australian Constitution Are 'Concurrent

Some powers in the Australian Constitution are 'concurrent'.This means that:

A) if the Commonwealth and the states make laws in an area such as health,these laws must be identical.
B) the Commonwealth has the power to pass laws that conflict with state legislation.
C) both the Commonwealth and State parliaments have the right to pass laws in areas covered by the powers.
D) the Commonwealth has the exclusive right to pass laws in the area covered by the powers.