A sensitive instrument called a microspectrophotometer can accurately determine ... ...

A sensitive instrument called a microspectrophotometer can accurately determine the exact mass of DNA in cells. In a culture of diploid cells, the instrument was used to measure DNA in the cells at various stages of the cell cycle. The lowest amount measured was 3.2 picograms (pg) of DNA, while the highest was 6.4 pg. In one cell, 4.8 pg was measured. In what stage of the cell cycle was this particular cell?
(A) G1
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 12. Mitosis