30 pg DNA in G phase is doubled during the S phase of the cell cycle by replication to 60 pg.After meiosis, I, DNA content (60 pg) is equally divided into two cells i.e. 30 pg in each cell. Both the cells further divide to form four haploid cells during meiosis II so that the DNA content (30 pg per cell) is further reduced by half i.e. 15 pg DNA in each cell (meiosis II products).So the correct answer is '15 pg'.