The correct sequence of phases of cell cycle
is
(1) M ``\rightarrow`` ``G_1`` ``\rightarrow`` ``G_2`` ``\rightarrow`` S
(2) ``G_1`` ``\rightarrow`` ``G_2`` ``\rightarrow`` S ``\rightarrow`` M
(3) S ``\rightarrow`` ``G_1````\rightarrow````G_2`` ``\rightarrow`` M
(4) ``G_1`` ``\rightarrow`` S ``\rightarrow`` ``G_2`` ``\rightarrow`` M