Answer:
c let me know if i am wrong
Explanation:
The S Phase is when the chromosomes duplicate
One big way to tell a difference is that DNA is double stranded, in the shape of a double helix, while RNA is single stranded. (This is why RNA can leave the nucleus and DNA cannot) There are also factors that affect the difference like how DNA contains thymine, and when RNA makes copies of it, it becomes uracil.
I believe that the answer is (A) , cause if their hetero then it could be a 50/50 chance so if its not (A) then it might be (D)
forgive me if i am wrong, have a nice day! :)