The correct option is
C S and M
G2 phase is the second subphase of Interphase in the cell cycle preceding mitosis. DNA is replicated during S phase and it enters into the G2 phase when the cell prepares for mitosis or meiosis. Synthesis of proteins needed for spindle formation and mitosis are synthesized during this phase, The cell doublechecks the DNA for replication errors and afterward, all cells migrate to mitosis. Hence option C is correct.