The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.$?

The Palaeozoic era starts at ____ million years ago and ends at ____ m

1.	The Palaeozoic era starts at ____ million years ago and ends at ____ million years ago.$?
A.	500, 100
B.	570, 225
C.	470, 150
D.	470, 225
Answer» C. 470, 150