Read the following statements and identify the correct statements bout S phase(syntheticphase)? (i) It occurs between `G_1` and `G_2`. (ii) It marks the period during which DNA replicates. (iii) At the end of this phase, DNA is doubled but the number of chromosomes remains unchanged. (iv) As the DNA is doubled in this phase,number of chromosomes is also doubled. (v) Centrioles replicatein this phase. (vi) Amount of DNA changes from 2C to 4C. (vii) It is pre `G_2` and post `G_1` phase.

Options

A. (i),(ii),(iv),(v),(vi) and (vii)
B. (i),(ii),(iii),(v),(vi) and(vii)
C. All of the above
D. Only(iv)