Arrange the following phases in the chronological order of their occurrence:
A)Neolithic–Chalcolithic cultures which have elements of the Neolithic along with the use of metal (mainly copper).
B)' Pure Neolithic' sites.
C) Full-fledged Chalcolithic context.
D) Mesolithic phase where the roots of some of the features associated with the Neolithic can be traced.
1
b, a, c, d
2
c, a, b, d
3
d, b, a, c
4
a, b, c, d